Typical homemade sweets and pastries of the old Cafe Cova, Milan, Lombardy, Italy, Europe

A view of the volcanic mountains surrounding Cova de Paul on Santo Antao Island, Cape Verde, Africa

A view of the volcanic mountains surrounding Cova de Paul on Santo Antao Island, Cape Verde, Africa

Fog shrouds the volcanic mountains surrounding Cova de Paul on Santo Antao Island, Cape Verde, Africa

A view of the volcanic crater of Cova de Paul on Santo Antao Island, Cape Verde, Africa

Bar built in cliff caves, Cova d'en Xoroi in evening, Cala en Porter, Menorca, Balearic Islands, Spain, Mediterranean, Europe

Cova de Xeroi, Menorca, Balearic Islands, Spain, Mediterranean, Europe

Traditional white and blue painted cottages in village centre, Porto Cova, Beja district, West Portugal, Europe

The typical Milanese breakfast with cappuccino and homemade brioche at the old Cafe Cova, icon of Milan, Lombardy, Italy, Europe

Cova d' es Xoroi discotheque, Cala en Porter, Minorca, Spain

Bar and Disco in the Cova d´en Xoroi in the cliffs near Cala en Porter, Minorca, Balearic Islands, Spain

La Cova Foradada cave at the Far de Cap de Barbaria lighthouse on the southern tip of Formentera, Balearic Islands, Spain, Europe

Cova den Xoroi, Minorca, Balearic Islands, Spain

Cova den Xoroi, Minorca, Balearic Islands, Spain

Cova d'en Colom cave, Majorca, Balearic Islands, Spain, Europe

Cova den Xoroi, Minorca, Balearic Islands, Spain

View of sign post on Cova road near Halifax, Prospect Bay, Nova Scotia, Canada