42-Day Coral Triangle, Great Barrier Reef & Southeast Asia

The main island of Singapore is shaped like a flattened diamond, 42 km (26 miles) east to west and 23 km (14 miles) north to south. Near the northern peak is the causeway leading to West Malaysia—Kuala Lumpur is less than four hours away by car. It is at the southern foot where you will find most of the city-state’s action, with its gleaming office towers, working docks, and futuristic "supertrees," which are solar-powered and serve as vertical gardens. Offshore are Sentosa and over 60 smaller islands, most uninhabited, that serve as bases for oil refining or as playgrounds and beach escapes from the city. To the east is Changi International Airport, connected to the city by metro, bus, and a tree-lined parkway. Of the island's total land area, more than half is built up, with the balance made up of parkland, farmland, plantations, swamp areas, and rain forest. Well-paved roads connect all parts of the island, and Singapore city has an excellent, and constantly expanding, public transportation system. The heart of Singapore's history and its modern wealth are in and around the Central Business District. The area includes the skyscrapers in the Central Business District, the 19th-century Raffles Hotel, the convention centers of Marina Square, on up to the top of Ft. Canning. Although most of old Singapore has been knocked down to make way for the modern city, most colonial landmarks have been preserved in the CBD, including early-19th-century buildings designed by the Irish architect George Coleman.

The Spanish arrived at this beautiful corner of the world in March of 1872, founding the city, that would eventually become the Capital of Palawan. In 2011, the area received a huge boost, when New7 announced its list of the 7 Wonders of Nature – counting 500 million votes in the process. Puerto Princesa’s stunning underground river - complete with a cavernous, sunken lagoon - beat off wonderful sites like the Great Barrier Reef, to claim a spot on the final, prestigious list. Set sail across the glowing green water, on a journey into the gaping mouth of the limestone caves at Puerto Princesa. Known for being one of the least densely populated, cleanest and most environmentally friendly cities in the Philippines, there’s a raft of natural wonders to explore - from diving hotspots to towering limestone cliffs, and the entrancing underworld of the underground river.

Rabaul, the former provincial capital, has quite a remarkable location. The town is inside the flooded caldera of a giant volcano and several sub-vents are still quite active today! The fumes of the volcano Tavurvur can be seen continually and the town suffered greatly during the last major eruption of 1994 when some 80% of the houses collapsed due to the ash raining down onto their roofs. Rabaul has a Volcano Observatory sitting atop the town’s center, monitoring the 14 active and 23 dormant volcanoes in Papua New Guinea. A small museum opposite the bunker used by Yamamoto during World War II shows exhibits relating to Rabaul’s local, German, Australian and Japanese past from the 19th century to Papua New Guinea’s independence in the 1970s.

This coastal city has little in the way of sandy beaches or surf, but it does have shady parks, charming colonial buildings, and a boardwalk-flanked waterfront Esplanade with a terrific man-made beach and picnic facilities. The historic town center has thrived recently, with an influx of lively eateries and bars. There are also some excellent museum and a world-class aquarium.Queensland Parks and Wildlife Service has an office on Magnetic Island, but Townsville Enterprise's information kiosks in Flinders Square and the Museum of Tropical Queensland (MTQ), on the mainland, are the best sources of visitor info about the island.

Tourism is the lifeblood of Cairns (pronounced Caans). The city makes a good base for exploring the wild top half of Queensland, and tens of thousands of international travelers use it as a jumping-off point for activities such as scuba diving and snorkeling trips to the Barrier Reef, as well as boating, fishing, parasailing, scenic flights, and rain-forest treks.It's a tough environment, with intense heat and fierce wildlife. Along with wallabies and grey kangaroos in the savannah and tree kangaroos in the rain forest, you'll find stealthy saltwater crocodiles, venomous snakes, and jellyfish so deadly they put the region’s stunning beaches off- limits to swimmers for nearly half the year. Yet despite this formidable setting, Cairns and tropical North Queensland are far from intimidating places. The people are warm and friendly, the sights spectacular, and—at the right time of year—the beachside lounging is world-class.

Darwin is Australia's most colorful, and exotic, capital city. Surrounded on three sides by the turquoise waters of the Timor Sea, the streets are lined with tropical flowers and trees. Warm and dry in winter, hot and steamy in summer, it's a relaxed and casual place, as well as a beguiling blend of tropical frontier outpost and Outback hardiness. Thanks to its close proximity to Southeast Asia and its multicultural population it also seems more like Asia than the rest of Australia. Darwin is a city that has always had to fight for its survival. The seductiveness of contemporary Darwin lifestyles belies a history of failed attempts that date from 1824 when Europeans attempted to establish an enclave in this harsh, unyielding climate. The original 1869 settlement, called Palmerston, was built on a parcel of mangrove wetlands and scrub forest that had changed little in 15 million years. It was not until 1911, after it had already weathered the disastrous cyclones of 1878, 1882, and 1897, that the town was named after the scientist who had visited Australia's shores aboard the Beagle in 1839. During World War II it was bombed more than 60 times, as the harbor full of warships was a prime target for the Japanese war planes. Then, on the night of Christmas Eve 1974, the city was almost completely destroyed by Cyclone Tracy, Australia’s greatest natural disaster. It's a tribute to those who stayed and to those who have come to live here after Tracy that the rebuilt city now thrives as an administrative and commercial center for northern Australia. Old Darwin has been replaced by something of an edifice complex—such buildings as Parliament House and the Supreme Court all seem very grand for such a small city, especially one that prides itself on its casual, outdoor-centric lifestyle. Today Darwin is the best place from which to explore Australia's Top End, with its wonders of Kakadu and the Kimberley region.

Pink Beach earned its name for the way the beach can appear to have a rosy hue in certain lights. The color comes from small flecks of red coral mixed in with the fine white reef sand. With a few trees along the beach for shade, this stretch of coast makes a fine place to relax or enjoy a snorkel or dive in the crystal clear waters. It is possible to spot a striped clown fish nestled among the protective tentacles of its sea anemone host, or to see a grouper lazily swimming by a flamboyant soft coral. The reef here is now protected by law and the maturing corals are a joy to behold.

Bali really is as alluring as everyone says. This island, slightly bigger than Delaware, has it all: beaches, volcanoes, terraced rice fields, forests, renowned resorts, surfing, golf, and world-class dive sites. But what sets Bali apart from other nearby tropical destinations is Balinese tradition, and villagers dedicated to celebrating it. The hundreds of temples, dances, rituals, and crafts linked to their ancient Hindu faith aren't a show for tourists, but a living, breathing culture in which visitors are warmly received by the Balinese, who cherish their own identities.

Bali really is as alluring as everyone says. This island, slightly bigger than Delaware, has it all: beaches, volcanoes, terraced rice fields, forests, renowned resorts, surfing, golf, and world-class dive sites. But what sets Bali apart from other nearby tropical destinations is Balinese tradition, and villagers dedicated to celebrating it. The hundreds of temples, dances, rituals, and crafts linked to their ancient Hindu faith aren't a show for tourists, but a living, breathing culture in which visitors are warmly received by the Balinese, who cherish their own identities.

The main island of Singapore is shaped like a flattened diamond, 42 km (26 miles) east to west and 23 km (14 miles) north to south. Near the northern peak is the causeway leading to West Malaysia—Kuala Lumpur is less than four hours away by car. It is at the southern foot where you will find most of the city-state’s action, with its gleaming office towers, working docks, and futuristic "supertrees," which are solar-powered and serve as vertical gardens. Offshore are Sentosa and over 60 smaller islands, most uninhabited, that serve as bases for oil refining or as playgrounds and beach escapes from the city. To the east is Changi International Airport, connected to the city by metro, bus, and a tree-lined parkway. Of the island's total land area, more than half is built up, with the balance made up of parkland, farmland, plantations, swamp areas, and rain forest. Well-paved roads connect all parts of the island, and Singapore city has an excellent, and constantly expanding, public transportation system. The heart of Singapore's history and its modern wealth are in and around the Central Business District. The area includes the skyscrapers in the Central Business District, the 19th-century Raffles Hotel, the convention centers of Marina Square, on up to the top of Ft. Canning. Although most of old Singapore has been knocked down to make way for the modern city, most colonial landmarks have been preserved in the CBD, including early-19th-century buildings designed by the Irish architect George Coleman.

Koh Samui is the most popular tourist destination on the Western Gulf coast, which isn't surprising, considering the island's gorgeous beaches, perfect weather, and sparkling blue, almost turquoise, water. Koh Samui has seen rapid development since the 1990s, and you'll encounter hotels in all price ranges.Koh Samui is half the size of Phuket, so you could easily drive around it in a day. But Koh Samui is best appreciated by those who take a slower, more casual approach. Most people come for the sun and sea, so they head straight to their hotel and rarely venture beyond its beach. But it's worth exploring beyond your lodging. Every beach has its own character, and you might find the perfect one for you. One beach many visitors find to their liking is Chawaeng. On Koh Samui's east coast, this stretch of glistening white sand is divided into two main sections—Chawaeng Yai (yai means "big") and Chawaeng Noi (noi means "little"). You'll find the greatest variety of hotels, restaurants, and bars here. Despite the crowds, Chawaeng is no Pattaya or Patong—the mood is very laid-back. A rocky headland separates Chawaeng Lamai Beach, whose clear water and long stretch of sand were the first place on the island to attract developers. More budget accommodations are available here than in Chawaeng, and there are some happening nightclubs.On the west coast of Koh Samui, Na Thon is the island's primary port and the spot where ferries arrive from the mainland. It's home to the island's governmental offices, including the Tourism Authority of Thailand, and there are banks, foreign-exchange booths, travel agents, shops, restaurants, and cafés by the ferry pier. A few places rent rooms, but there's really no reason to stay here—nicer accommodations can be found a short songthaew ride away.To the north and east of Na Thon lie a few beaches worthy of exploration. Laem Yai, 5 km (3 miles) north, has great seafood. East of here, a small headland separates two low-key communities on the northern shore, Mae Nam and Bophut Beach. Mae Nam is also the departure point for boats bound for Koh Phangan and Koh Tao . Just south of the Samui's northeastern tip you'll find sandy Choengmon Beach, a good area for swimming that's not overdeveloped.

There are two Bangkoks, the ancient soul of Thailand with its long and fascinating history and the frantic, modern metropolis that embraces the latest trends both Eastern and Western. The two blend together remarkably well—even the most jarring juxtapositions of old and new somehow make sense. Bangkok is not only the biggest city in Thailand, but also the most mesmerizing, with some of the country's most beautiful temples and shrines. The city's energy is palpable, especially at night, when traffic opens up a bit, its famous markets get going, and everything seems lit up—from its proudest monuments to its seediest streets. When Ayutthaya was besieged and pillaged by the Burmese in 1766, Thonburi became Thailand's capital. The Thais call Bangkok Krung Thep (City of Angels), and in 1782 King Rama I moved his capital here, just across the Chao Praya River. Laem Chabang is approximately 130 km (81 mi) from Bangkok.

There are two Bangkoks, the ancient soul of Thailand with its long and fascinating history and the frantic, modern metropolis that embraces the latest trends both Eastern and Western. The two blend together remarkably well—even the most jarring juxtapositions of old and new somehow make sense. Bangkok is not only the biggest city in Thailand, but also the most mesmerizing, with some of the country's most beautiful temples and shrines. The city's energy is palpable, especially at night, when traffic opens up a bit, its famous markets get going, and everything seems lit up—from its proudest monuments to its seediest streets. When Ayutthaya was besieged and pillaged by the Burmese in 1766, Thonburi became Thailand's capital. The Thais call Bangkok Krung Thep (City of Angels), and in 1782 King Rama I moved his capital here, just across the Chao Praya River. Laem Chabang is approximately 130 km (81 mi) from Bangkok.

Da Nang is the third largest city in Vietnam with the land area of 1283 square kilometre and the population of approximately 1million people. Da Nang is growing into one of the most organized urban area, with attractive beach front villas on the one side and Han River flowing on the other. Of the few attractions that belong to the city, Museum of Cham stands out with its rich collection of Cham artefacts. For those who crave for more outdoors activities, My Khe beach is a good place to spend time, either by yourself or with your loved ones. Da Nang is in close proximity to Hue- 3 hours North and Hoi An- 30 minutes south, which makes it a perfect stop point for those who need a break from touristy areas. Hue was once the Royal Capital of Viet Nam. The city represents the outstanding demonstration of the power of the vanished Vietnamese feudal empire, including a complex of monuments, tombs and pagodas that attract tourists coming from all over the world. Hoi An has to this days well preserved its most sacred treasure, the centuries-old architecture. The town used to harbour foreign traders back in the 17-18th, and once is an important heavily-frequented trading port in Southeast Asia.

A visit to the north is not complete without a trip to Halong Bay, where placid waters give way to more than 3,000 limestone karsts and wind-sculpted limestone formations that jut from foggy lagoons. Dotting the bay are tiny islands bordered by white sandy coves and hidden caves, adding to the majestic landscape of this UNESCO World Heritage Site. Adding to this naturalist’s dream is the biodiversity of islets, grottos, and Cat Ba Island National Park. The bay, however, shows tourism’s impact: the clearing of mangrove forests to make way for jetties and piers, marine life threatened by game fishing, and garbage from passenger boats and fishing villages washed up on the shores.Beyond its geological uniqueness are activities like hiking, kayaking, rock climbing, or exploring one of the many floating villages where fishermen bring in their daily catch. The downside to all this allure is the large number of unlicensed boats it draws to the bay each day.Boat trips out onto the bay are the main tourism stock in trade farther north, but a more multifaceted side of the area can be experienced at Cat Ba Island. The largest island in Halong Bay, Cat Ba is very much its own entity. Its national park offers incredible biodiversity, with more than a thousand species of plants having been recorded here. Animal life is slightly thinner on the ground, but alert visitors may spy inhabitants such as the endangered golden-headed langur, wild boar, deer, civets, and several species of squirrel. Trekking through the wilderness is a highlight with a number of fascinating trails to follow.Cat Ba Island has also become a firm favorite with the adventure sports set. Indeed, along with Railay Beach in Thailand, it is recognized as one of the top spots in the region for rock climbing. Other outdoor pursuits include sailing and kayaking around the karsts. Although Halong Bay has arguably been tainted by over-exposure, Bai Tu Long Bay farther east toward China, retains all the majesty of Vietnam’s premier bucket-list natural attraction but sees a fraction of the traffic of its immediate neighbor to the west. Here, visitors will find islands of substantial size with deserted beaches and untamed jungle. Halong Bay's 3,000 islands of dolomite and limestone cover a 1,500-square-km (580-square-mile) area, extending across the Gulf of Tonkin nearly to the Chinese border. According to legend, this breathtaking land- and seascape was formed by a giant dragon that came barreling out of the mountains toward the ocean—hence the name (Halong translates into "descent of the dragon"). Geologists are more likely to attribute the formations to sedimentary limestone that formed here between 300 and 500 million years ago, in the Paleozoic Era. Over millions of years water receded and exposed the limestone to wind, rain, and tidal erosion.Today the limestone formations are exposed to hordes of tourists—but don't let that discourage you. Hundreds of fishing trawlers and tour boats share space on these crystal waters, yet there seems to be room for everyone. Most people use the main population center, Halong City, as a base from which to venture into the bay. Although it's now officially one municipality, Halong City was, until 1996, two separate towns: Bai Chay is now Halong City West, where Halong Road winds its way around the coast and past the lifeless central beach; Hon Gai is the grimier Halong City East, where a coal transportation depot dominates the center of town and covers nearby roads and buildings with a sooty film. Locals still refer to the towns by their old names, but they are now inexorably lassoed together by a bridge. Boat trips through Halong Bay are the main attraction. Little of the majesty of this region can be found in the city, so head out onto the water and start exploring. Countless 10- and 30-foot fishing boats have been converted into Halong Bay's formidable tourist-boat fleet. Hotels or travel agencies in Halong City or Hanoi can arrange boat trips for you (often they are part of organized tours from Hanoi). It is still possible to go down to the wharf and bargain yourself onto a boat for the day, but you are likely to be charged (sometimes significantly) more than you would pay for a prebooked tour, so this is not advised. Self-sufficient travelers have fallen victim to the old bait-and-switch: they've arranged a next-day boat tour with local fishermen, only to be told in no uncertain terms the following morning that they could not board their chosen boat, but they could take a different one for quite a bit more money. You may have no choice in the end. Usually travel agencies, however, have their tried-and-true favorites.

The Hong Kong Island skyline, with its ever-growing number of skyscrapers, speaks to ambition and money. Paris, London, even New York were centuries in the making, while Hong Kong's towers, bright lights, and glitzy shopping emporia weren't yet part of the urban scene when many of the young investment bankers who fuel one of the world's leading financial centers were born. Commerce is concentrated in the glittering high-rises of Central, tucked between Victoria Harbor and forested peaks on Hong Kong Island's north shore. While it's easy to think all the bright lights are the sum of today's Hong Kong, you need only walk or board a tram for the short jaunt west into Western to discover a side of Hong Kong that is more traditionally Chinese but no less high-energy. You'll discover the real Hong Kong to the east of Central, too, in Wan Chai, Causeway Bay, and beyond. Amid the residential towers are restaurants, shopping malls, bars, convention centers, a nice smattering of museums, and—depending on fate and the horse you wager on—one of Hong Kong's luckiest or unluckiest spots, the Happy Valley Racecourse. Kowloon sprawls across a generous swath of the Chinese mainland across Victoria Harbour from Central. Tsim Sha Tsui, at the tip of Kowloon peninsula, is packed with glitzy shops, first-rate museums, and eye-popping views of the skyline across the water. Just to the north are the teeming market streets of Mong Kok and in the dense residential neighborhoods beyond, two of Hong Kong's most enchanting spiritual sights, Wong Tai Sin Temple and Chi Lin Nunnery. As you navigate this huge metropolis (easy to do on the excellent transportation network), keep in mind that streets are usually numbered odd on one side, even on the other. There's no baseline for street numbers and no block-based numbering system, but street signs indicate building numbers for any given block.