Hardegg Castle, National Park Thaya Valley, Lower Austria Add to favorite DMCA Complaint Tweet Hardegg Castle, National Park Thaya Valley, Lower Austria Free Photo by Publicdomain Free Download License: CC0 1.0 Universal (CC0 1.0) ID: 263405 Tags: travel, history, national, iron, knight, tower, outside, castle, central, palace, park, valley, historical, medieval, count, outdoor, destination, old, curtain, emperor, frontier, locations, maximilian, sights, hardegg, narodni, thayatal, thaya