Hanging Gardens of Babylon
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The Hanging Gardens of Babylon were one of the Seven Wonders of the World. Like the other six Wonders, it was stolen by Pholonius Ginn, who intended on selling it to the highest bidder on G-Bay. The Tenth Doctor and Martha Jones arrived to see it just before its disappearance. It was later returned by Trongus Squum, at the Doctor's request. (COMIC: Minus Seven Wonders)
The First Doctor, Ian Chesterton, Barbara Wright and Susan visited the Hanging Gardens in 323 BC. (AUDIO: Farewell, Great Macedon)