caption: The image shows an old map of the city of San Francisco, California, with text written on it. It is a plan of the island of Castillo de Sébastian, with the city's streets, buildings, and other features clearly visible. The map is detailed, showing the various landmarks and streets that make up the island, as well as the surrounding area. The text on the map provides additional information about the city, such as its population, population density, and location.