Yet another signature structure in this list, the picturesque Golden Gate Bridge that we cannot imagine San Francisco without. It spans across the Golden Gate, the strait connecting San Francisco Bay and the Pacific Ocean and is 8,981 ft (2,737.4 m) long. The construction of the suspension bridge started on January 5, 1933, with architect Irving Morrow at the helm and engineering design by Joseph Strauss, and Charles Ellis. The production cost was more than $35 million ($493 million in 2016 dollars), though the bridge was finished ahead of schedule and $1.3 million under budget (equivalent to $23.8 million today). It was finished in 4 years and took 11 construction workers' lives.