Another photo simply shows the floor of one of the jail cells.

NPR: New Abu Ghraib Pictures, Videotape Made Public

The "cells" have a chain-link fence perimeter, a concrete floor and a wooden roof but are otherwise open to the elements.

CNN: First night in Cuba 'peaceful' for war detainees

The architect in charge of the project, Barbara Nazzaro, says that visitors will be able to see where the lions, tigers, bulls, ostriches and gazelles were kept in cells before being hoisted up on 80 rope-slung lifts to the ground floor.

BBC: Going underground at the Colosseum

On the ground floor of the house is the men's quarters where male slaves were housed in a row of cement cells.

CNN: Senegal's scenic island exposes horrors of slave trade