The Golden Gate Bridge was the largest suspension bridge in the world when it was completed in 1937.
Weeks of civil and cultural activities called "the Fiesta" surrounded the opening of the bridge, completed in April 1937 and opened to pedestrians on May 27 of that year. The next day, President Roosevelt pushed a button in Washington, DC signaling the official start of vehicle traffic over the Bridge at noon.
The color of the bridge is an orange vermilion called International orange. The color was selected by consulting architect Irving Morrow because it blends well with the natural surroundings yet enhances the bridge's visibility in fog.
The Golden Gate Bridge has a similar sister bridge in Lisbon, Portugal, the red-painted Ponte 25 de Abril (25th of April Bridge).