The Roman Birth House (mammisi) stands in front of the main Temple of Hathor, a smaller free-standing chapel built in the Roman period to celebrate the divine birth of Harsomtus, the child of Hathor and Horus worshipped at Dendara. It follows a standard mammisi plan but is decorated with carvings that mix Egyptian hieroglyphic tradition with touches of Greco-Roman style — a visible manifestation of the cultural blend that characterised Roman Egypt.
The mammisi's columns and exterior walls retain good painted reliefs showing ritual scenes of divine birth and nursing. An earlier Ptolemaic birth house stands nearby, incorporated into the outer enclosure wall. Together they illustrate how the birth house tradition evolved over several centuries of foreign rule, with Egyptian religious forms maintaining remarkable continuity.