Is 400 city blocks as big as Alcatraz?
It's about 100 times as big as Alcatraz
The size of Alcatraz is about 4.10 city blocks.
(a.k.a. The Rock) (California)
Alcatraz Island measures 4.10 city blocks. It is known a part of the Golden Gate National Recreation Area, and has historically served as a lighthouse, fort, military prison, and — most famously — a federal prison.
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