The Golden Gate Strait is the entrance to the San Francisco Bay from the Pacific Ocean. The strait is approximately three-miles long by one-mile wide. The Golden Gate Bridge is acclaimed as one of the world's most beautiful bridges. With its tremendous towers, sweeping main cables, and great span, it is a sensory beauty featuring color, sound, and light. The Bridge can be a very busy place, particularly during the summer months. It is estimated that about nine million people from around the world visit the Bridge each year (1989 survey by San Francisco Convention and Visitor Bureau).