Angel Island is an island located in San Francisco Bay, California). The entire island is included within Angel Island State Park, which is administered by California State Parks). The island has been used by humans for a variety of purposes, including seasonal hunting and gathering by indigenous peoples, water and timber supply for European ships, ranching by Mexicans, United States military installations, a United States Public Health Service Quarantine Station, and a U.S. Bureau of Immigration inspection and detention facility). The Angel Island Immigration Station, which has been designated a National Historic Landmark, was where officials detained, inspected, and examined approximately one million immigrants, who primarily came from Asia). Angel Island is the second largest island in the San Francisco Bay, and on a clear day, Sonoma and Napa can be seen from the north side of the island; San Jose can be seen from the south side of the island). The highest point on the island is Mount Caroline Livermore, more commonly known as simply Mt Livermore, at a height of 788 feet (240 meters) ). Angel Island offers many recreational opportunities, including hiking, biking, swimming, scuba diving, and windsurfing/surfing. Visitors can also explore the islands history by visiting the Immigration Station, the Barracks Museum, and other interpretive exhibits.