Mikó Castle

The Mikó Castle is a fortified castle in Miercurea Ciuc, Romania. It is among the city's most important monuments, and today houses an ethnographic museum devoted to Székely heritage.

Work on the castle, which is 75 m long and 70 m wide, began on 26 April 1623 and probably was completed in the 1630s. In style, it resembles the castles at Iernut, Vințu de Jos and Lăzarea. It is named after Ferenc Mikó, who began building it a decade after becoming supreme captain of the Csíkszék, Gyergyószék and Kászonszék Székely seats, later merged into Csík County. Documents of the time also refer to it as "Mikó's new citadel".