Looking across the calm waters of Havana Bay to Havana with the 16th century fortress, Morro Castle, standing guard, Havana, Cuba, West Indies, Caribbean, Central America

Falklands Island fisheries patrol ship the outer harbor of Stanley on East Island, Falkland Islands

Cannon of Castle Cornet, Saint Peter Port, Island of Guernsey, Bailiwick of Guernsey, British Crown dependency, English Channel, Europe

Lifeguard, South Beach, Miami, Florida, USA

Lifeguard, South Beach, Miami, Florida, USA

Lifeguard Hut, South Beach, Miami, Florida, USA

Lifeguard Hut, South Beach, Miami, Florida, USA

Lifeguard, South Beach, Miami, Florida, USA

Sunset, Watchtower Talaia d'Albercutx, Cap Formentor, Port de Pollença, Serra de Tramuntana, Majorca, Balearics, Spain, Europe

Royal Guernsey Golf Club, Martello towers, watch towers and fortified towers built in the 17th century, next to the fairways, at Pembroke bay in the northeast of the Channel Island of Guernsey, Europe

Rescue tower and rescue boat on the beach, Adriatic Sea, Italy, Europe

Rescue tower and rescue boat on the beach, evening mood, Adriatic Sea, Italy, Europe

Genoese watchtower, rocky coast of Porto, Gulf of Porto, Corsica, France, Europe

O'Briens Tower, Cliffs of Moher, County Clare, Ireland, Europe

Martello towers, watch and guard towers from the 17th century found along the coastline, here Tower No. 5 at Pembroke Bay in the northeast of Guernsey, Channel Islands, Europe