The Golden Gate is a strait that links San Francisco Bay with the Pacific Ocean. It is three miles (5 km) long and between one and two miles (1.6-3.2 km) wide. It is deep enough to accommodate ocean-going vessels. Discovery of the strait is attributed to Francisco de Ortega in 1769, although it is possible that Sir Francis Drake may have landed in the area first. The Golden Gate Bridge, built between 1933-1937, is at the entrance of San Francisco Bay. It is one of the world's most famous bridges, spanning 4,200 feet (1,280 m). Two main cables, each three feet in diameter, pass over steel towers 746 feet (227 m) high. The bridge includes a six-lane roadway and two footpaths.