Tienen Mithraeum

A Mithraeum is a special place where people who followed the religion of Mithras would go to worship and have ceremonies. It's kind of like a church, but for a different religion. Inside the Mithraeum, there would be statues and decorations to honor Mithras, who was a god in that religion. People who were in the religion believed in things like bravery, loyalty, and helping others. So when they went to the Mithraeum, they would try to show those qualities to Mithras and each other.