In an interesting article from the New York Times this week, different families completed not so typical renovations. A few years ago, the Sleeper family moved from their crowded Missouri ranch house when they saw an eBay offering for three acres with an empty sandstone cave in Festus, Missouri. The initial idea to build a larger home on the land was soon abandoned as the family realized the potential the former quarry offered. With 15,000 feet of naturally insulated space, the Sleeper family took up a new residence – inside the cave. The older family members helped add more “home” touches to the cave and since the cave’s bare walls shed sand, the Sleepers placed interior roofs or umbrellas over areas like the kitchen that need to stay sand-free. Other than that, the family truly enjoys the natural feel of the space and have created a comfortable home. “The inside of the house feels like you’re outdoors without the discomfort of hot or cold,” Mrs. Sleeper states. More images after the break.