The biggest island in the Philippines, Luzon is also one of the most diverse—it’s where mountain peaks and volcanoes meet miles of coastline, and indigenous culture melds with Spanish colonial history. You can relax at the beach in Pagudpud, hike with locals up the Batad Rice Terraces, ride in a horse-drawn carriage in Vigan, and snack on street food and dance the night away in Manila. You’ll need a few days and a bus pass, but you’ll be glad you stayed.

Baguio, perched high in the Cordillera Central Mountains, is a great place to escape the heat of the Philippine lowlands. Camp John Hay, originally built as a recreation area for U.S. soldiers, now is a full-fledged resort complete with a world-class golf course. Definitely stop at the city market, where you can buy almost anything (just be prepared to haggle).

Metropolitan Manila encompasses six cities and 12 towns. Located on Manila Bay in the South China Sea, and bisected by the Pasig River, the capital of the Philippines is historic and modern, rich and poor. A popular sight is the walled area called Intramuros. The capital during Spanish colonization, Intramuros has retained old dungeons and gunpowder rooms but added art galleries and theaters. The city is filled with museums, shops, parks and churches, plus enough nightlife to last until dawn.

Why settle for a beachfront hotel when you can stay right over the ocean in a cottage on stilts? And why settle for any old dive site when you can snorkel in an orchid-walled lagoon? El Nido is known as the Philippines' last frontier, and if you're looking for magnificent beaches in an unspoiled setting, it's a perfect place for you to vacation.

Located just off Boho Island (the Philippines' largest), Planglao is home to pristine beaches and luxurious hotels. The island's Alona and Dumaluan beaches in particular serve up the white sands and turquoise waters that have become a trademark of the Visayas region.

The charming Vietnamese capital has aged well, preserving the Old Quarter, monuments and colonial architecture, while making room for modern developments alongside. Hanoi may have shrugged off several former names, including Thang Long, or "ascending dragon," but it hasn't forgotten its past, as sites such as Ho Chi Minh's Mausoleum and Hoa Lo Prison attest. Lakes, parks, shady boulevards and more than 600 temples and pagodas add to the appeal of this city, which is easily explored by taxi.

Seoul is the business and cultural hub of South Korea, where skyscrapers tower over Buddhist temples. Take it all in from the N Seoul Tower, built atop a peak in Namsan Park. The teahouses and shops of Insadong give you a taste of Korean flavor, which you can further experience with a visit to the grounds and museums of Gyeongbokgung. UNESCO World Heritage Site Changdeokgung Palace is a fine example of authentic ancient architecture.