Chiang Mai is essentially Thailand's second city - the smaller, more relaxed answer to the madness of Bangkok. It was once the capital of the Lanna Kingdom, but now is a major draw for backpackers and travelers of all kinds, not to mention retiring expats and humanitarians. Many who come here return again and again, or stay for years when they had meant to stay only a few weeks. There's an energy in the city that captivates those who visit, whether they seek a trekking adventure or a spiritual awakening as they travel from temple to temple.