Prisons

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

This Italian ski resort rose to fame when Benito Mussolini was held prisoner there and then rescued by the SS.

It's a pretty creepy lock-up.

A World War II officers' club features Old West murals painted by German POWs.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

A sweet symbol marks the place where torturous executions were once carried out.

Inmates dig the graves at the largest prison cemetery in the U.S., the final resting place of both cowboys and Indians.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

Too much gossip or just missing curfew could land you in here for a couple of days.

Trinkets and toys lovingly handmade by maximum security prisoners.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

A memorial museum to the political prisoners who were held at Sighet Prison, once one of the most feared places in Romania.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

High in the clouds of San Marino sits an ancient tower with some curious prisoner graffiti.