The largest city in Northern Thailand has a vibrant history, but isn't stuck in the past. So make your Chiang Mai trip a journey across time, taking in the old and the new. Start at the Old City, surrounded by 700 year old walls. Take Tha Phae Gate inside to explore the Three Kings Monument, the Lanna Folklife Museum, and a copious amount of temples -- including the stunning Wat Chedi Luang. There's plenty to do outside the walls as well, like riding an ATV through the jungle.