Golden Gate Bridge. Construction commenced on January 5, 1933, and the bridge was open to vehicular traffic on May 28, 1937.

Fighting fires near Camp Angeles at Angeles National Forest, Calif. July 1922

Enormous locks were constructed either side of the canals in 1913

Dressed in rain gear, judges at the 1964 Summer Olympics in Tokyo, Japan, October 14, 1964,

De Lesseps pushed ahead with the plans, hired 40,000 men and started the construction in 1881

Construction workers pose inside an 18-foot wall culvert at Gatun Locks construction site

Chamber cranes in Pedro Miguel Locks during construction of the Panama Canal

By the time the raised-canal plans were accepted, more than 22,000 workers had perished from the likes of malaria, yellow fever and dysentery

A more familiar modern view is the tarmac packed with aircraft. Pictured here is Terminal 5 which opened in 2008 and is used exclusively by BA and now IAG (Iberia

A monkey is pictured in chains at the animal farm. Today the public can walk around the abandoned animal cages, as the area has been opened as a recreational park

A large skeleton on display at the zoo, which was opened by a friend of Teddy Roosevelt, John Benson

A colour image of Terminal 2 in 1957 shows individuals manning check in desks while passengers calmly walk by

A 1957 view of the new Central Area control tower with BEA RF4 buses parked in the foreground

By the time the raised-canal plans were accepted, more than 22,000 workers had perished from the likes of malaria, yellow fever and dysentery

Back in the day, attractions at the zoo in Central Park included shows where keepers would attempt risky feats with the animals. Pictured is a man placing his head in a hippo’s mouth in 1910