What is the name of the Island located in San Francisco Bay, 1.25 miles offshore, with facilities for a lighthouse, a military prison, and the Parade Grounds, a large concrete open area?
Alcatraz Island Alcatraz Island ( ) is located in San Francisco Bay, 1.25 mi offshore from San Francisco, California, United States. The small island was developed with facilities for a lighthouse, a military fortification, a military prison (1868), and a federal prison from 1934 until 1963. Beginning in November 1969, the island was occupied for more than 19 months by a group of Native Americans from San Francisco, who were part of a wave of Native activism across the nation, with public protests through the 1970s. In 1972, Alcatraz became part of a national recreation area and received designation as a National Historic Landmark in 1986.
Skaggs Island Naval Communication Station Skaggs Island Naval Communication Station is a former United States Navy installation located near California State Route 37 between Novato and Vallejo, California. It was a secretive, secure, and self-contained naval base, engaged in a number of communications and intelligence gathering functions for the Navy and other federal intelligence organizations. The 3310 acre site was purchased by the Navy in 1941, and closed in 1993. The antennas continued to be used for some time after that, but by 2013 they were removed along with all of the remaining buildings.