Now, some shots from the Bonifacio citadel and the fantastic limestone cliffs.

Some descriptions from Wikipedia:

The southern coast in the vicinity of Bonifacio is an outcrop of chalk-white limetone, precipitous and sculpted into unusual shapes by the ocean. Slightly further inland the limestone adjoins the granite of which the two islands, Sardinia and Corsica, are formed. […]

The city of Bonifacio is split into two sections. The vieille ville (old town), or la Haute Ville (the Upper city), on the site of a citadel, is located on the promontory overlooking the Mediterranean Sea. The citadel was built in the 9th century with the foundation of the city. The Citadel has been reconstructed and renovated many times since its constructio and most recently was an administrative center for the French Foreign Legion. Today it is more of a museum. […]

The city and its fortifications also extend for some distance along the cliff-tops, which are at about 70 meters (230 ft) elevation. The cliffs have been undercut by the ocean so that the buildings, which have been placed on the very lip of the precipice, appear to overhang it. The appearance from the sea is of a white city gleaming in the sun and suspended over the rough waters below.