City-states are rare in the present day—and none are quite like Singapore. In the 20th century, the Southeast Asian nation hurtled itself into the modern world, and it continues to expand its state-of-the-art transportation system and build its edgy skyline. Yet Singapore’s urban plan wisely maintained its intimate neighborhoods, many with streets lined with colorful shophouses (a type of building unique to parts of Asia, with businesses located on their ground floors and residences above). Add the city’s mix of ethnic groups—mainly Malays, Chinese and Indians—and you get a vibrant cultural scene that attracts a cosmopolitan, international community.

Singapore’s food scene—which is arguably the world’s most dynamic and runs the gamut from beloved street hawkers to Michelin-starred venues—would merit a trip alone, as would its never-ending shopping options. But the city is also packed with world-class museums, many designed by celebrated architects, and it hosts many major international events, such as the Formula One Grand Prix. Yet only about half of the 720-square-kilometer (278-square-mile) island is developed, which leaves plenty of room for parks and open spaces such as the Bukit Timah Nature Reserve, where an old-growth forest still thrives.

Thailand, known as Siam until 1932, is the only country in Southeast Asia (and one of the few in the world) never to have been colonized by a European power. Its capital, Bangkok, reflects the country’s unique status. It has embraced modernity on its own terms as the seat of a beloved monarchy that dates back to the 13th century. In this city, Buddhist temples and gilded palaces coexist with the bustle of one of Asia’s major metropolises. The contrast between the golden glow of sunrise along the Chao Phraya River, which runs through the municipality, and the neon lights of downtown can feel intoxicating. There are few places in the world where you can spend the morning visiting a centuries-old stupa, have lunch at one of the world’s top Michelin-starred restaurants and then shop for exquisite silk garments. And wherever you explore, you’ll be struck by the warm welcome you receive. “The Land of Smiles” may be a cliché and a tourism-marketing slogan, but it’s also a fitting nickname for Thailand.

Many of the country’s most important historic areas can be found not far from Bangkok. Ayutthaya, the former Thai capital, is a UNESCO World Heritage Site with impressive Buddhist ruins. The 16th-century town of Chachoengsao is known for its many temples, including Wat Saman Rattanaram with its 22-meter-long (72-foot-long) statue of the Hindu god Ganesha. In Pattaya, on the coast, the Pattaya Elephant Village is a sanctuary for Asian elephants.

Whether you travel by boat, bus or tuk-tuk (a three-wheeled motorized taxi) to explore Bangkok’s temples, palaces and markets, be prepared to fall in love with this city that somehow manages to be both chaotic and captivating at the same time.

Thailand, known as Siam until 1932, is the only country in Southeast Asia (and one of the few in the world) never to have been colonized by a European power. Its capital, Bangkok, reflects the country’s unique status. It has embraced modernity on its own terms as the seat of a beloved monarchy that dates back to the 13th century. In this city, Buddhist temples and gilded palaces coexist with the bustle of one of Asia’s major metropolises. The contrast between the golden glow of sunrise along the Chao Phraya River, which runs through the municipality, and the neon lights of downtown can feel intoxicating. There are few places in the world where you can spend the morning visiting a centuries-old stupa, have lunch at one of the world’s top Michelin-starred restaurants and then shop for exquisite silk garments. And wherever you explore, you’ll be struck by the warm welcome you receive. “The Land of Smiles” may be a cliché and a tourism-marketing slogan, but it’s also a fitting nickname for Thailand.

Many of the country’s most important historic areas can be found not far from Bangkok. Ayutthaya, the former Thai capital, is a UNESCO World Heritage Site with impressive Buddhist ruins. The 16th-century town of Chachoengsao is known for its many temples, including Wat Saman Rattanaram with its 22-meter-long (72-foot-long) statue of the Hindu god Ganesha. In Pattaya, on the coast, the Pattaya Elephant Village is a sanctuary for Asian elephants.

Whether you travel by boat, bus or tuk-tuk (a three-wheeled motorized taxi) to explore Bangkok’s temples, palaces and markets, be prepared to fall in love with this city that somehow manages to be both chaotic and captivating at the same time.

Whether you are on a wide boulevard admiring the French Colonial architectural influence, or in a bustling market haggling with a street vendor, you cannot escape the culture and history of this bustling city. Ho Chi Minh City is home to many colorful pagodas, cathedrals and palaces-including one of the city’s oldest, Giac Lam Pagoda, dating from 1744. Sample shore excursions: Cambodia & Angkor Overland Adventure or Highlights of Ho Chi Minh City.

Kota Kinabalu, also known as KK to those in the know, is a modern city that has not forgotten its roots. Located on the northwest coast of the Island of Borneo, the world’s third-largest island, KK is also home to a modern arts scene, rich culinary heritage, long sandy beaches, pristine coral reefs, tropical rain forests, diverse cultures and beautiful flora and fauna.

Discover Borneo’s indigenous history; explore Kinabalu Park in search of rare orchids; visit the Sabah State Museum and City Mosque; and enjoy the antics of Borneo’s most famous residents, orangutans, whose name means “people of the forest” in Malay.

Puerto Princesa, the capital of Palawan in the Philippines, is home to 250,000 people and offers a vastly different experience from Manila’s often overwhelming big-city dynamism. For many travelers, it’s simply a gateway to the resorts of El Nido, also on Palawan Island. Those who spend some time here, however, will discover a city that combines a laid-back vibe with beautiful sandy beaches and a wealth of marine life. Nearby, there are also lush mountains, rain forests, waterfalls and dramatic limestone cliffs. Among the most popular sights are the Immaculate Conception Cathedral, where visitors are welcome to celebrate Mass accompanied by choral singing; the Palawan Heritage Center, which displays local artworks and crafts; and the peaceful Palawan Butterfly Ecological Garden and Tribal Village. The city’s biggest draws, however, are a boat trip through the limestone caves of the Puerto Princesa Subterranean River National Park, and the beaches and islands scattered around scenic Honda Bay—perfect for snorkeling, sunbathing and picnics. Speaking of food, a visit to the most famous restaurant in the city, Kalui, is guaranteed to be a memorable experience for seafood fans; adventurous foodies can order crocodile sisig, a traditional—and delicious—stir-fry dish.

Called the Island of Gold during the latter half of the Ming Dynasty, the area that is now Manila has known Burneian, Spanish, British, American and Japanese rule. This long and diverse history is reflected in Manila’s architecture and neighborhoods. Explore Binondo, Manila’s Chinatown dating back to 1594, Intramuros, Asia’s only medieval, European-style walled city, and the posh neighborhood of Malate. Sample shore excursion: Modern Manila.

Called the Island of Gold during the latter half of the Ming Dynasty, the area that is now Manila has known Burneian, Spanish, British, American and Japanese rule. This long and diverse history is reflected in Manila’s architecture and neighborhoods. Explore Binondo, Manila’s Chinatown dating back to 1594, Intramuros, Asia’s only medieval, European-style walled city, and the posh neighborhood of Malate. Sample shore excursion: Modern Manila.

Can any city in the world top Hong Kong’s phenomenal energy? Judge for yourself as you ride the tram to the top of Victoria Peak, join the surge into countless markets and watch the hardworking world of Aberdeen’s fishing junks. Sample shore excursions: Morning Tai Chi & Cooking Tour; Hong Kong Island City Sightseeing; Explore Lantau Island & Monastery.