Architecture of San Francisco

[2] Bay windows were identified as a defining characteristic of San Francisco architecture in a 2012 study that had a machine learning algorithm examine a random sample of 25,000 photos of cities from Google Street View.

[3] Icons of San Francisco architecture include the Golden Gate Bridge, Alcatraz Island, Coit Tower, the Palace of Fine Arts, Lombard Street, Alamo Square, Fort Point, the Transamerica Pyramid, and Chinatown.

The people in charge of the fortifications decided to rebuild The Castillo de San Joaquín, but using much more modern materials and building techniques.

The bridge spans almost two miles across the Golden Gate, the narrow strait where San Francisco Bay opens to meet the Pacific Ocean, connecting the city with Marin County, California.

After 10 years of planning, the Golden Gate Bridge Company was formed and Strauss was appointed chief engineer for the project.

By 1930, the Golden Gate project had gained sufficient support from the public to ensure passage of a $35 million bond to finance the construction of the bridge.

It was the longest suspension bridge in the world upon its completion and was considered a masterful feat of architectural engineering, designed to hold 5,700 lb/ft on its roadway and 2,000 lb/ft on its walkways.