700 year old Iranian Home. Allegedly, these homes in Iran, carved out of solid rock, were built on the order of 700 years ago and are still inhabited by people who have given them modern touches (you know, the little things like and electricity)
Iglu-Dorf Hotel in Switzerland. – Built from scratch every winter, it takes almost 3000 tons of snow to create each Igloo. Standard village consists of Igloo Hotel, Igloo Bar, series of tunnels, and smaller Igloos that serve as private rooms.
Here's the wildly creative 'Bedrock' house at Cob Cottage Co. in Coquille, OR. The house is yes, built upon bedrock, and yes, has a bed that is situated on a particularly large piece of that rock inside.