Shutterstock / Foofa Jearanaisil

Phu Kradueng National Park

Phu Kradueng National Park (อุทยานแห่งชาติภูกระดึง) is one of the most popular national parks in Thailand, and spending the night atop its eponymous peak is something of a rite of passage for many students in the region. The park covers a high-altitude plateau cut through with trails and peppered with cliffs and waterfalls. Rising to 1316m, Thailand's second national park is always cool at its highest reaches (average year-round temperature is 20°C), where its flora is a mix of pine forest and savannah. Various forest animals, including elephants, Asian jackals, Asiatic black bears, sambar deer, serows, macaques and white-handed gibbons, inhabit the 348-sq-km park.

The park can get very crowded during school holidays (March to May and especially New Year) and it's closed from June to September.