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  1. Oct 8, 2021 · Alcatraz Island Map. ... San Francisco, CA 94123 Phone: 415-561-4900 ... Download the official NPS app before your next visit.

  2. May 28, 2024 · Alcatraz Island, rocky island in San Francisco Bay, California, U.S. The island occupies an area of 22 acres (9 hectares) and is located 1.5 miles (2 km) offshore. Alcatraz Island. The federal penitentiary on Alcatraz Island, San Francisco Bay, California. The island had little vegetation and was a seabird habitat when it was explored in 1775 ...

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  3. Alcatraz Island ( / ˈælkəˌtræz /) is a small island 1.25 miles (2.01 km) offshore from San Francisco, California, United States. [1] The island was developed in the mid-19th century with facilities for a lighthouse, a military fortification, and a military prison. In 1934, the island was converted into a federal prison, Alcatraz Federal ...

  4. Feb 28, 2024 · Scientists and technology experts spent three weeks in December using cameras, drones and a robot dog to gather four trillion bytes of data to build the first 3-D map of the entire island in full ...

  5. Here are the basics: Purchasing Tickets is highly recommend in advance. The sole concessionaire contracted with the National Park Service to sell tickets is Alcatraz City Cruises LLC. You can purchase your tickets through them online at Alcatraz City Cruises or call (415) 981-7625.

  6. Alcatraz Island is located in San Francisco Bay, 1.25 miles 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.

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