In the raised peristyle garden was a nymphaeum. This took the form of a large semi-circular niche. The niche was heavily decorated with mosaic, which does not survive today. It included the ornamentation of plants and reeds on a blue background. The vaulted ceiling of the niche was decorated with a mosaic pattern of a shell. Below the ceiling ran a row of shells acting like a cornice, with the remainder of the niche below this being painted red. In the centre of the niche stood a marble statue of Silenus resting against a tree trunk and holding a water bottle from which water poured. The niche sat against the west wall of the peristyle, above a series of marble steps from which water flowed down into the circular basin below. On either side of these steps were two herms depicting Bacchus.