The temple and beach at Khao Tao are just one of the top day trip options from Hua Hin Â© Alexander Shalamov / Getty Images
Hugging the coastline 40km south of Hua Hin, Khao Sam Roi Yot is visited by Thais in their droves. What draws them here is Tham Praya Nakhon, a spectacular, light-filled cave that houses a meeting hall built for King Rama V in 1890. Once youâve marvelled at this cave there are many other less-visited caverns to explore, glistening with stalactites and stalagmites, such as Tham Kaew and Tham Sai.
The park is a paradise for bird-watchers too â it sits at the intersection of the East Asian and Australian migration routes and is home to 300 different bird species â and youâll also find Thailandâs largest freshwater marsh here, as well as sandy beaches accessed by boat.