Mithras shrines
In the Roman Empire Ptuj was an important, magnificent city (Poetovio) and a base camp. Soldiers from the east brought Mithraism, a Persian religion with mysterious rites that were only attended by men. Five magnificent shrines to the god Mithras have been discovered in Ptuj. Five magnificent shrines to the god Mithras have been discovered in Ptuj, and you can see the foundation, altars, reliefs and cult imagery in the remnants of Mithraeum I and Mithraeum III, two ancient Roman shrines from the 2nd and 3rd century.