Don't lose your balance!
Can you imagine living on a cliff like this?
This one-half of a square mile village is considered on of the most beautiful places to visit in Catalonia, Spain.
Part of Castellfollit de la Roca was built in the Middle Ages and most of the houses are made from volcanic rock.
It looks like a cool place to see, but a difficult place to live.
Just getting to the store would be a challenge, not to mention the fear of an earthquake.