Petrohrad Castle, Castle ruin in Petrohrad, Czech Republic

Petrohrad Castle remains stand within the protected area of Háj Petra Bezruče and offer views across the Louny District landscape. The ruins display the structure of a former fortification whose stonework is partly preserved and reflects the region's past.

Petrohrad was founded in the mid-14th century; Petr z Vrtby is recorded as its first owner in 1356, when it was called Petersburg. By 1559 it was listed as deserted, and around 1560 Jaroslav Libštejnský z Kolovrat began building a chateau below it. The Černín family bought the estate in 1622 and held it until 1945.

The castle ruins hold the status of a cultural monument of the Czech Republic and are registered in the national monument catalogue. Visitors and locals regard the site as an important part of regional identity and local heritage.

The castle ruins are accessible via marked hiking trails that lead to the village of Petrohrad and pass through the protected forest landscape. Visitors should wear sturdy footwear and be prepared for uneven ground and exposed structures.

The circular Chapel of All Saints, built in 1652 to plans by Carlo Lurago, stands on the levelled lower ward and is now the only dominant feature of the castle site. Its conical shingle roof and lunette windows survive, though its original furnishings are lost.