Since 1929, the Monaco Grand Prix has been held annually in the streets of Monaco. It is widely considered to be one of the most prestigious automobile races in the world. The erecting of the circuit takes six weeks to complete, and the removal after the race another three weeks. The circuit has many elevation changes and tight corners, along with a tunnel. This together with being incredibly narrow make it perhaps the most demanding Formula One track. Only two drivers have ever crashed into the harbour, the most famous being Alberto Ascari in the 1955 Grand Prix (Ascari lost his life four days later at Monza). The other was Paul Hawkins during the 1965 Grand Prix.