When was the last time you asked someone sarcastically, "Have you been living under a rock?" and the reply was, "Well actually, yes."? Not many people in the world can say that, presumably. Except the residents of this quaint little village in Portugal
That's because homes in the Portuguese village of Monsanto are actually built in a way that incorporates the gigantic granite boulders of the mountains that surround them.
This mountaintop village has people living in houses whose walls, floors and roofs are made up of up to 200-tonne rocks.