Often mistakenly called London Bridge (which is actually the next bridge upstream and the vantage point of this image), Tower Bridge is a combined bascule and suspension bridge that spans the River Thames. It is close to the Tower of London, which gives it its name. A bascule bridge is one whose surface can be quickly drawn up to allow river traffic to pass through it. In the foreground is the Royal Navy light cruiser HMS Belfast, now a museum ship operated by the Imperial War Museum. Among the action HMS Belfast saw was support of Operation Overlord, the D-Day landings at Normandy, France that began on June 6, 1944.