Day 1 Singapore, Singapore

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.

Day 3 Phuket, Thailand

Though few tourists linger here, Phuket Town, the provincial capital, is one of the more culturally interesting places on the island to spend half a day. About one-third of the island's population lives here, and the town is an intriguing mix of old Sino-Portuguese architecture and the influences of the Chinese, Muslims, and Thais that inhabit it. The old Chinese quarter along Talang Street is especially good for a stroll, as its history has not yet been replaced by modern concrete and tile. And this same area has a variety of antiques shops, art studios, and trendy cafés. Besides Talang, the major thoroughfares are Ratsada, Phuket, and Ranong roads. Ratsada connects Phuket Road (where you'll find the Tourism Authority of Thailand office) to Ranong Road, where there's an aromatic local market filled with fruits, vegetables, spices, and meats.

Day 4 Langkawi Island, Malaysia

On Malaysia's west coast, Langkawi is an archipelago made up of 99 islands. The only real settlement is on the main island, Pulau Langkawi. This popular beach destination attracts divers from around the world to explore the sea life, and after being declared a duty-free zone back in the '80s, it has become a favorite shopping spot for visitors seeking cheap booze. You'll find sightseeing attractions—such as national parks, a cable car ride, and a large aquarium—throughout this island of lush rainforests. However, it's the long stretches of sandy beach that attract most visitors to this tropical paradise.

Day 5 Georgetown, Penang, Malaysia

An island off the northwest coast of peninsular Malaysia, Penang is blessed with a multicultural history that's led to a fascinating fusion of East and West. Claimed by the British East India Company in 1786, the island's city center of Georgetown—listed as a UNESCO World Heritage Site—is filled with colonial architecture, temples, and museums. The island has also attracted many Chinese immigrants, who now make up the majority of the population. On Penang you'll find an exciting mix of jungle, coast, farmland, and fishing villages, along with the country's largest Buddhist temple.

Day 6 Port Klang, Malaysia

Kuala Lumpur, or KL as locals refer to it, intrigues visitors with its diversity and multicultural character. The city's old quarter features stretches of shop houses that hint at its colonial past, while modern buildings—including the iconic Petronas Towers—give a glimpse of its modern financial ambitions. The city is filled with culturally colorful quarters dedicated to Chinese, Malay, and Indian communities. New shopping malls with designer labels, five-star hotels, and top-notch restaurants also proliferate in this bustling city of 1.6 million.

Day 7 Bintan Island, Indonesia

Day 9 Phu My, Vietnam

Day 11 Ko Samui, Thailand

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.

Day 12 Laem Chabang, Thailand

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.

Day 13 Laem Chabang, Thailand

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.