The Mackwiller Mithraeum was built in the middle of the 2nd century, during the reign of Antoninus the Pious, on the site of a spring already worshipped by the natives.
The Mithraeum was found in one of the rooms of the Horrea built in the years 120 - 125 AD. The installation of the shrine may have taken place in the first half of the third century.
The Mithraeum of Lucretius Menander was installed in the early 3rd century in an alley to the east of a Hadrianic building named after the solar god temple.
TNMM6 – CIMRM 224
Deo Invicto Mithrae / Diocles ob honorem / C. Lucreti Menandri / Patris / D(ono) D(edit) D(edicavit).
This Mithraic temple, aka Mithraeum of the Olympii, was discovered in the 15th century in Rome, although traces have been lost except for a few monuments with remarkable inscriptions.
The Mithraeum in the Chapel of the Three Naves was not linked to the cult of Mithras until recently because of a mosaic showing a pig, in the belief that it was an animal unfit for consumption in a temple of Eastern origin.
The Mithraeum of Symphorus and Marcus, in Óbuda, Budapest, has been restored to public view in 2004 and, while well presented, it has been heavily restored.