View looking south southeast over the excavations of the Lower City. The covering of the "Nile Festival House" is visible just above and to the right of the center of the image. In the foreground one of the sided streets is visible.
Early in the second century AD the city expanded eastward and boasted an impressive network of streets arranged in a grid, with two colonnaded streets, the cardo and decumanus, at its center. This area included public buildings, shops, residences, and religious structures. Many mosaics were found inside of these structures.