San Francisco has marked the 75th anniversary of the Golden Gate Bridge.
Thousands of people gathered overnight for celebrations, which culminated in a spectacular fireworks display over San Francisco Bay.
The bridge was opened to pedestrians on 27 May 1937, and to traffic the next day. At the time, the Golden Gate was the world's longest suspension bridge.
The structure now attracts some 10 million visitors each year.
Dreamt up by engineer Joseph Strauss, the bridge distinguishes itself by its unique colour, which was chosen by architect Irving Morrow and dubbed International Orange.
The paint originally ensured visibility for passing ships and served as a sealant to protect the bridge from the salty mist from the Golden Gate Strait after which it was named, the entrance to the bay from the Pacific Ocean.
Construction of the bridge took four years. Some 2.7km long, it is 27 metres wide and its two towers reach 227 metres above sea level. Traffic is suspended at 67 metres from the water.
The structure also has a grim history as a place for suicides.
An estimated 1,600 people have died there in instances where the body was recovered, with many more unconfirmed, according to the Los Angeles Times.
