The house built inside a cave is in Festus, MO, just a little south of St. Louis and is very unusual.

It is three-stories and is over 17k square foot. There are four bedrooms and two baths. The cave home is super energy efficient because it naturally has a year-round temperature around 70 degrees.

We stopped by on a trip from Kansas City, MO to St. Louis to visit some friends of ours that used to live in Kansas City.

The cave is located at 1101 N 11th St, Festus, MO 63028.