Designed By: Unknown
What It’s Worth: Unknown
Where It’s Docked: Unknown
This houseboat looks like something you’d find on The Flintstones. Someone spotted this mysterious rock houseboat docked in the water, and the photo quickly went viral, though not much is known about the owner, price, and whether anyone actually lives there.

Judging from the design, it looks like something Andrea Zittel, an American artist, would create. Zittel was responsible for “Indianapolis Island” and “Pocket Property,” two art installations. Pocket Property was a forty-four-ton concrete island that was anchored off the Denmark coast. Indianapolis Island was another public display—it’s an inhabitable mini-houseboat made of white fiberglass in the 100 Acres Lake
