Reed Flute Cave, China
When it comes to interesting and almost surreal tourist attractions, the Reed Flute Cave is clearly a front runner, and maybe even number one on the list. Inside you will find a whole world of fantasy full of stalactites, stalagmites, and other rock formations, all of which are illuminated by color-changing lights to accentuate their magical character. The name of the cave comes from the type of reed that is grown in the area. People in China used this reed to make flutes in ancient times. Entering the Reed Flute Cave is like going through the looking glass to enter an enigmatic world of fantasy.
https://en.m.wikipedia.org/wiki/Ca%C3%B1o_Cristales