Temple of Mithras, Carrawburgh, Northumberland
Hadrian’s Wall is scattered with interesting sites, including this Temple of Mithras
in Carrawburgh Roman fort.
The soldiers built the Temple to the god Mithras, around 200 AD and it was destroyed around 350 AD. Mithraism was a Roman religion inspired by a god originally worshipped in the eastern Empire. Three altars found were dedicated by commanding officers of the unit stationed here, the First Cohort of Batavians from the Rhineland.
Source: Wikipedia