1. Khao Yai National Park
Khao Yai National Park is one of the largest national parks in Thailand and a UNESCO World Heritage Site. It's home to many scenic nature trails, stunning flora and fauna, any many different animal species, from mammals and reptiles to birds and insects. If you’re really lucky, you may just spot a herd of wild elephants. You might also recognise the 150m-tall Haew Narok and 20m-tall Haew Suwat, as seen in the Danny Boyle film 'The Beach.'