Mithras Temple design possessed its own unique features with an oblong tripartite structure consisting of a central nave and wide benches on both sides. In some temples, two rows of pillars extended alongside the nave separating it spatially from the adjoining bench sections. In such cases, this temple layout could be called a basilica.
The plan to utilize wide benches in a Mithras temple must have originated from the “triclinium, ” a very popular structure among the Nabataeans who lived in Transjordan in the Hellenistic and Roman periods. On the other hand, the adoption of a basilical style of architecture by the Mithraists took place in the latter part of the second century A. D. which predates the appearance of the basilical synagogue layout. Further, this design concept may have influenced the adoption of this building style by the Christians in the age of Constantine the Great.