On May 27th, 1937 at 6 am, a foghorn sounded signaling the official opening of the Golden Gate Bridge for people to walk across it. Nearly 200,000 people took advantage of the day by walking, running, roller-skating and even dancing across the bridge. In 1937 it was the longest suspension bridge in the world and of course, San Francisco’s major landmark. The following day, May 28th, 1937, the bridge was officially open to traffic. Here are 6 things you may not know about the Golden Gate Bridge.