US National Parks
Collection of all units managed by the National Park Service
Alcatraz Island Channel Islands Mojave Pt. Reyes
Alcatraz Island, A Nationa Park on San Francisco Bay

The small island was developed with facilities for a lighthouse, a military fortification, a military prison, and a federal prison from 1934 until 21 March 1963. The water currents around the island were high at all times, which presumably decreased the chance of an inmate escaping.[from wikipedia]

Channel Islands, National Park

In the Pacific Ocean off California's coast

Mojave, National Preserve

A 1.6 million acre park

Pt. Reyes, National Seashore

On the Point Reyes Peninsula in Marin County, California

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