Cannon and loop-hole, Ciudad Velha, Cidade Velha, Santiago, Cape Verde, Africa

Talaia d'Albercutx, an old Pirate Watch Tower at Cape Formentor, Majorca, Balearic Islands, Spain, Europe

Talaia d'Albercutx, an old Pirate Watch Tower at Cape Formentor, Majorca, Balearic Islands, Spain, Europe

Cannon and loop-hole, Ciudad Velha, Cidade Velha, island of Santiago, Cabo Verde, Africa

Cannon and loop-hole. Ciudad Velha. Cidade Velha. Santiago. Cabo Verde. Africa

View through loop-hole to city and sea, Ciudad Velha, Cidade Velha, island of Santiago, Cabo Verde, Africa

Cannon and loop-hole. Ciudad Velha. Cidade Velha. Santiago. Cabo Verde. Africa

Embrasure in the city wall in Strausberg, Brandenburg, Germany, Europe

View through a keyhole in the castle walls onto parts of the outer castle complex, Hohenrechberg Castle near Schwaebisch-Gmuend, Baden-Wuerttemberg, Germany, symbolic image, Europe