Truly is unusual design, a house that built in large stone. The stone house is located in hillside of Fafe Mountains in Portugal. This hillside house boasts unobstructed, untarnished views of the grass-covered mountain and valley. House architecture that maybe was inspired by Flintstones cartoons. It just looks like ordinary house system with windows, doors, roof, but they are blended so well with the large stone.
Here are some pictures of this stone house design, photos from Feliciano Guimaraes.