The castra of Odorheiu Secuiesc was a fort built in the 1st century AD.

A nearby contemporary settlement was also archeologically identified.

[1] The castra and the settlement were abandoned in the 3rd century.

[2] Their ruins are located in Odorheiu Secuiesc (Hungarian: Székelyudvarhely) in Romania.

At the same settlement, the ruins of a Roman tower can also be identified at Piatra Coţofană (Hungarian: Szarkakő).