The Domus Transitoria was Roman Emperor Nero's palace on Palatine Hill destroyed by the Great Fire of Rome in 64 AD. Marble and other parts salvaged from the ruins later became part of the Domus Aurea, the Roman Emperor's official residence. The palace was intended to connect all of the possessions of the imperial house with Palatine.
The site was excavated in 1721, where considerable damage was done during the excavations. The lower floors contained sunken gardens, two pavilions, a nymphæum, and an art gallery. Beyond these rooms is a very large latrine, which has been wrongly thought to be the machinery chamber of a hydraulic lift, which would, it is supposed, have worked in a shaft over 35 metres (120 feet) deep found not far off.