Archaeologists currently believe that the L'Arc de Campanus dates from the end of the 1st century. Just above the large archway, a partially-legible inscription reads L.POMPEIUS CAMPANUS VIVUS FECIT. At the top of the archway, names have been inscribed, with carved niches above each one. We don't know anything about Lucius Pompeius Campanus, who built the monument to honour his family's dead. The arch has attracted the interest of researchers, as its position in the outskirts of the temple and its themes raises questions: is it a funeral arch, a commemorative arch or a gateway to the thermal baths?