Il Mausoleum of Saint Helena was built by Emperor Constantine between 326 and 330 AD, originally as his tomb, later intended for his mother Helena, who died in 328. The tomb is located within the imperial complex of Ad Duas Lauros, which also includes the catacombs of Saints Marcellinus and Peter.
The restoration highlighted the coexistence of several buildings and evidence: the monumental mausoleum, which develops both in circumference and in height for more than 20 meters; the small farmhouse and the nearby eighteenth-century church; the catacombs. The visit is completed by the musealization of artifacts from the territory such as those from the cemetery of the “equites singulares” and from the underlying catacomb.
The Mausoleum also marks the starting point of the Via Francigena del Sud route, as the Via Casilina and the Via Prenestina depart from the area. A place of rare charm and rich suggestions, which with the redevelopment and restoration completes another piece for the renewal of the area.

