Located in Parthenon, Arkansas, this Flintstones-style home is built into a cave, and has been purposely renovated in a way to keep the features of the cave and its authenticity.

It’s been converted into a lodge so you can stay in the lodge for around US$1,200 a night out of season, but in peak holiday seasons prices pump up to around $2,000.

Source: 20 incredible hidden homes you won’t believe