Phraya Nakhon, Thailand

If you've never heard of Phraya Nakhon Cave, get ready to have your mind blown by this extraordinary location. This impressive sinkhole cave is one of Thailand's most enigmatic landmarks. Phraya Nakhon does have one thing no other cave in the world has, but it's not one of those magnificent sinkhole caves that are located beneath lakes and have waterfalls gushing into them from the surface. The remarkable aspect is that it has a Thai Pavilion that is 125 years old.

It takes an exhausting hour of hiking through rocky terrain and verdant forests to reach the cave. The stunning sight of the Kuha Karuhas Pavilion greets you as soon as you enter the cave, soothing both the eyes and the soul. King Rama V is the honorary patron of this man-made marvel. You will undoubtedly be in awe of the breathtaking scenery, which seems like it belongs on a movie set.

The Khao Sam Roi Yot National Park is traversed during the entire hike. So be sure to apply insect repellent to your skin. Additionally, the terrain is unforgiving and rugged, so wear sturdy footwear.

Getting there: 45-minute car or scooter ride from the beach town, Hua Hin.
Entry price: 200 Baht ($6 USD) per adult