Burgruine Kaja

Burgruine Kaja stands as an 800-year-old ruin in Hardegg, Lower Austria, overlooking the scenic Thayatal national park from its commanding tower position. First mentioned around 1150 when Heinrich von Kamegg and his son Hartung von Kaja established themselves here, the castle gained notoriety during the 14th century as a temporary seat of Bohemian nobles who earned it a reputation as a robber baron's stronghold. King Ottokar II frequently stayed and issued documents from Kaja between 1252 and 1278, reflecting its political importance during medieval times. The fortress suffered devastating raids from Hussite forces beginning in 1419 but persists today as a compelling historical monument. The ruins now serve as an accessible destination for company outings and school excursions, offering visitors beautiful panoramic views and a tangible connection to eight centuries of Austrian frontier history.