San Francisco. Infrared Landsat-5 satellite image of San Francisco, USA. North is towards the top. Vegetation appears red, water dark blue, urban areas light blue. San Francisco is the blue peninsula in the upper left, connected by the Golden Gate Bridge to the land to its north. To the city's east is San Francisco Bay, to its west the Pacific Ocean. Across the Bay is the city of Oakland. South of San Francisco is San Andreas Lake, which lies on the famous San Andreas Fault - a cause of major earthquakes in the area. The fault forms a dark line running southeast from the lake. The area shown is about 37,000 square kilometers.