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.

Day at sea - enjoy the ship's amenities and relax as you cruise to your next destination.

Day at sea - enjoy the ship's amenities and relax as you cruise to your next destination.

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.

Little more than a dot off the northwestern tip of Panay, Boracay is the Philippines' trophy beach. It offers an intoxicating mix of sun, sand and fun with hotels, restaurants and shops dotted along the beach. If you wish, you can visit popular White Beach or drive to Bulabog Beach as it is wilder and windier and a favorite windsurfing spot. Yet another option: relax on the serene and quiet beach of Puka in the north.

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.

Day at sea - enjoy the ship's amenities and relax as you cruise to your next destination.

Kaohsiung is a massive port city in southern Taiwan. It's home to many skyscrapers, such as the 248m-tall Tuntex Sky Tower, and is known for its diversity of parks. Its focal point is the Love River, with walking paths and cafes along its banks, and cruise boats navigating its waters. Shopping options range from high-end malls to the Liuhe and Ruifeng night

Hualien City is on the east coast of Taiwan. The central Pine Garden is a cultural center set inside a former Japanese military office. The Hualien County Stone Sculpture Museum showcases contemporary and traditional stone carvings. Tzu Chi Cultural Park is a tranquil green space, with statues and a meditation hall. On the Pacific Ocean coast, sprawling Nanbin Park features a popular night market.

Keelung City's sheltered harbor and its location on Taiwan's north coast have meant that, over the centuries, it has been ruled by the Spanish, Dutch and Chinese. While there are plenty of good coffee shops, markets and museums in the compact downtown and you can enjoy delicious seafood dishes at the Night Market, the city is today principally a gateway to Taipei for many travelers. Taiwan's capital is just a half hour away by car or around 45 minutes by train. Long a small outpost of the Chinese empire, the city began to grow in the 19th century, when settlement from the mainland was encouraged. Then, from 1895 to 1945, the city (and all of Taiwan) was occupied by the Japanese. At the end of World War II, Taipei was handed over to the Republic of China, led by Chiang Kai-shek. In the decades since, it has seen an explosion of growth, but traditional temples and world-class museums still sit amid the skyscrapers. The modern metropolis also has top restaurants, food markets and upscale shopping. The Taipei Metro makes it easy to explore the city, or you can take an excursion to the countryside: A national park and a protected forest make for excellent day trips from both Taipei and Keelung.

Day at sea - enjoy the ship's amenities and relax as you cruise to your next destination.

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.