In these three settlements, “living on the edge” gets a literal meaning.
Ronda (Malaga, Spain) is a popular tourist attraction, because of El Tajo, a 100-meter deep gorge separating the old town form the new one. El Tajo is spanned by three bridges, each built in a different historical age: Roman, Moorish and 18th Century.
Bonifacio (Corsica, France) is a beautiful port town set in the south-most point of Corsica, on white limestone cliffs eaten away by the wind and waves they had to endure. A naval haven throughout the century, Bonifacio is now a small marina, for expensive yachts from around the world.
Castellfolit de la Roca (Catalonia, Spain) is one of the smallest towns in Spain, set atop of a 50 meters-high basalt formation stretching out for a kilometer. The edge is a result of the erosion of two rivers that flow right near the town.