Fort Winfield Scott 1

Fort Winfield Scott, originally known as Fort Point, was built at the entrance to San Francisco Bay starting in 1853 and was continuously armed from 1861 to 1900. During WW2 it was armed with light rapid-fire guns to protect against fast patrol boats.
In 1930, plans were to demolish the fort to make way for the Golden Gate Bridge but a large steel arch bridge was designed to span the structure so that it could be saved.
Picture taken around 1980.