A view from the bridge of a ship passing through the Gatun Locks on the Panama Canal, Panama, Central America

Colourful shop fronts early morning, street scene, Patan, Kathmandu, Nepal.

Front of historic building, Yiheyuan (Summer Palace), Beijing, China, Asia

Love Locks spelling the word LOVE, The Distillery District, Toronto, Ontario, Canada, North America

Typical French window with lace curtain and pelmet, window box and wooden shutters, Normandy, France

Traditional French window lace curtains shutters window boxes in picturesque Sarlat, Dordogne, France

Smiling Mixed Race woman unlocking apartment mailbox

With houseboat on the Canal des Houilleres de la Sarre at lock 28 at Sarreguemines, Moselle, Region Alsace Lorraine, France, Europe

Detail of the monastery at Golden Lock Pass, Hua Shan, Shaanxi province, China, Asia

Locks at Rideau Canal, Ottawa, Quebec, Canada, North America, America

Youth breaking-and-entering using a knife to open patio doors

Cruise ship "Norwegian Dream", Norwegian Cruise Line, arriving at Holtenau lock, Kiel Canal, Kiel, Schleswig-Holstein, Germany, Europe

Three-master Antiqua entering the lock, Bremerhaven, Bremen, Germany

Neuer Wall street with Christmas lights and Schleusenbruecke lock bridge in Hamburg, Germany, Europe

Red Door With Decorative Windows Chained Shut With A Padlock, Athens, Greeec