The construction date of the castle which was built in the South part of the city on a hill is not known.
Evliya Çelebi who came to Çorum in 17th century describes that the castle was built by Sultan Kılıç (1092-1107) and it is a Seljuk building.
It has a square plan. The construction materials are dressed stone and rubble stones and the stones belonging to Roman-Byzantine period. There are a small mosque and houses inside.
