Serving as the northern gateway to Khao Yai National Park, the small city of Pak Chong and surrounding area has over the last few decades transformed from a dusty rural outpost to one of Thailand's most tourist areas. While foreign travellers remain relatively few here, the Pak Chong area is a major destination for local Thais on holiday, and it's also the place where many a rich Bangkokian has their mountain vacation home.