Flintstone House / William Nicholson

This 1970s William Nicholson-designed Flintstone House in Hillsborough, California is on the market. That’s not the real name by the way. It’s the name used locally to describe this bizarre 1976 creation, which is back on the market for the first time in nearly 20 years.

It doesn’t look like things have changed much over the decades, but that’s not surprising. After all, how would you update a house like this? Some tweaks here and there perhaps, but not much could be done to change this wonderfully curvy and cave-like build.

If the bold architecture appeals, you’ll need around $4,200,000 to get this — via WowHaus