This Mithraic temple, also known as the Mithraeum of the Olympii, dates to the 3rd century and was rediscovered in 15th-century Rome, but it has not been preserved.
Inscription de Olympius to his grandfather.Les Cultes de Mithra dans l’Empire Romain
The New Mithraeum
27 Jan 2022
Updated on Jan 2026
In the 15th century a Mithraeum was discovered on the Piazza S. Silvestro in Capite. About its construction all data fail. The altars and the bases, on which the inscriptions Nos. 400-405, are lost. One inscription (No. 406) however, has been preserved and stands on the back of a marble slab (H. 0.54 Br. 2.25). It was found in 1867 and is divided by small columns into four square and three semicircular niches, in which the seven planets must have been represented (Rome Museo Naz. Terme Inv. No. 662). The sanctuary was in use between 357-382 A.D.).MMM II 196 No.9; Helbig Fuhrer II 71 No. 1274; Paribeni Terme Diocl…
Inscription CIL VI 750 recording the transmission of the Persica and Heliaca grades by Nonius Victor Olympius and Aurelius Victor Augentius at the Mithraeum of Piazza S. Silvestro in Capite, dated to 358 A.D.
Inscription recording the transmission of the leontica grade by Nonius Victor Olympius and Aurelius Victor Augentius at the Mithraeum of Piazza S. Silvestro in Capite, dated to 359 and 358 A.D.
Large marble slab found in 1648 near S. Silvestro in Capite, inscribed with a Latin dedicatory poem forming a cypher-acrostic for TAMESIUS and AUGENTIUS, with records of leontica and chrysos initiations, dated to 362 A.D.