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).

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.

Darjeeling, nestled among rolling mountains, is a perfect destination for outdoor enthusiasts. Popular places to visit include Tiger Hill, Batasia Loop and the War Memorial, and the Himalayan Zoological Park and Snow Leopard Breeding Center. What should you bring home? Tea, tea, and more tea—and beautiful local handicrafts.

Pondicherry’s bougainvilleas, crumbling cathedrals and leafy boulevards might occasionally make you wonder if you’re in the south of France instead of a former French colony. But it's also unmistakably Indian, with colorful festivals, the famous monument of Aayi Mandapam, and the Sri Aurobindo Ashram. Quiet beaches stretch north and south from town, good for swimming and sunrise strolls.

Colombo is the gateway to Sri Lanka for most travelers—but don’t be tempted to simply pass through this diverse and interesting city. Take a train ride along the coast to Mount Lavinia, a popular beach, or explore the Talangama Wetland, which several TripAdvisor travelers say is the perfect place to take a break from the bustling streets of the city.