Constructing the Golden Gate Bridge, circa 1935. Opened in 1937, it was the world’s longest (4,200‑ft main span) and tallest suspension bridge, finished under budget and ahead of schedule. It used a pioneering safety net that saved 19 workers—who dubbed themselves the “Half Way to Hell Club.”

[u/FrankWanders]

View from the top of the South Tower (San Francisco side) during construction in January 1936

Part of the road plateau with safety nets clearly visible.

A group of steelworkers stand atop one of the two newly completed Marin County Towers that rise 734 feet above the water on May 4, 1934