The Mithraeum of Ostia Antica is the largest known temple dedicated to Mithra. The Mithraeum is located on the vast archaeological site 'Ostia Antica', located just outside of Rome, Italy.
The Mithraeum was discovered in 1912 by Ettore Ghislanzoni.
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Mitreo di Ostia Antica, 00119 Rome, Metropolitan City of Rome, Italy