The pie-shaped cells of the Pottawattamie County Jail were escape proof. They had no doors. To let an inmate in or out, the jailer rotated the floor until the cell lined up with the one and only opening. If an inmate had an arm or leg hanging out of the cage when the floor began to rotate, the appendage would break, or even tear off. Better known as the Squirrel Cage Jail, today the building serves as a museum—and is believed to be the most haunted building in Council Bluffs, Iowa.

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