Monday, Aug 24, 2020, 1:01 pm

By:Tony Williams

#7 Cave House - Festus, Missouri

This 15,000 square foot home was built by Curt and Deborah Sleeper in Missouri. Ultra modern and carved into rock, it is a modern day cave that Fred and Wilma Flintstone would love. Unfinished sandstone walls and geothermal heating, making this home self-sufficient, with no needs for heating or cooling appliances.