thus takes its name from the large Orpheus mosaic, showing the god playing his harp to an audience of trees, animals and birds. As Paul MacKendrick puts it, the mosaic is rather artlessly executed, as the animals are all of different sizes and face in different directions with no relationship to Orpheus. It appears that the mosaicist simply copied patterns from a book without attempting to integrate the different elements. The mosaic is situated in the triclinium, the dining room, where the diners would have reclined on couches set against the walls and admired the central mosaic. Other mosaics can be seen in the atrium, which has a depiction of Amphitrite in a chariot pulled by a seahorse and accompanied by other sea creatures, and in the bathing rooms. One room off the main courtyard has a mosaic of a dolphin, considered by the Romans to be a lucky animal. The House of the Athlete or Desultor, located near the forum, contains a humorous mosaic of an athlete or acrobat riding a donkey back to front while holding a cup in his outstretched hand. It may possibly represent Silenus. The most prestigious houses in the city were situated adjoining the Decumanus Maximus, behind rows of shops that lined the street under an arcade. They were entered from side streets between the shops. The House of the Ephebe was named after a bronze statue found there. It has a prominent interior courtyard leading to a number of public rooms decorated with mosaics, including a depiction of Bacchus in a chariot being drawn by leopards. The House of the Knight next door also has a mosaic of Bacchus, this time shown coming across the sleeping Ariadne, who later bore him six children. The house takes its name from a bronze statue of a rider found here in 1918 that is now on display in the archaeological museum in Rabat. It was a large building, with an area of about , and incorporated a substantial area dedicated to commercial activities including eight or nine shops opening onto the road and a large olive-pressing complex. The House of the Labours of Hercules is named for the mosaic depicting the twelve tasks that the demigod had to perform as penance for killing his wife and children. It is thought to have been created during the reign of the emperor Commodus, who identified himself with Hercules.