Metal watchtower of the federal prison of Alcatraz Island of the United States of America in the bay of San Francisco, California, USA. Surveillance u Stock Photo - Alamy
Guard Tower with spotlight outside the Manzanar Japanese-A… | Flickr
Alcatraz Guard Tower And Light Stock Photo - Download Image Now - Blue, Building Exterior, Built Structure - iStock
The center guard tower you... - Eastern State Penitentiary | Facebook
Steel Watch Tower With Spotlight Stock Photo, Picture and Royalty Free Image. Image 23572808.
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