Sidirokastro (Achaea)

Sidirokastro (Greek: Σιδηρόκαστρο literally "the iron castle") was a castle in Achaea, Greece, situated between the villages Krini and Kallithea.

It is located on one of the foothills of the Panachaiko, the Omplos, near the Omblos Monastery in Zoitada.

It is unknown when exactly it was built, most likely by the Franks of the Principality of Achaea.

It was used for the defense of Patras, around which the Venetians had built many small castle-fortresses.

It is believed that the iron gate of the Omplos Monastery is originally from the castle.