One of the most famous landmarks in San Francisco is probably the Golden Gate Bridge. It is a suspension bridge connecting San Francisco peninsula and Mairin County. It was completed in 1957 and at the time was the longest suspension bridge in the world. It spans the Golden Gate which is a stretch of water that is very hard to cross by boat due to the strong currents. It carries two main routes of traffic and is one of the most well known features in California. It is also one of the top five most loved architectural structures in America by the Architectural Institute of Architects.