The aptly named stronghold of the House of Hohenzollern in Baden-Württemberg, Germany – the Hohenzollern Castle is most striking because of its Disney-esque architecture. In fact its current façade was inspired by the English Gothic revival and commissioned by King Frederick William IV of Prussia between 1846 and 1867.
101 Most Beautiful Places To Visit Before You Die! (Part II)
Křivoklát Castle in Central Bohemia, Czech Republic: The castle was founded in the century and belonged to Bohemian kings. Fire damaged the castle so many times, it was turned into a prison. During the century, new owners reconstructed the castle.
Hohenwerfen Castle, built 1075-1077 by Archbishop Gebhardt of Salzburg, stands high above the Austrian town of Werfen in the Salzach valley, approximately 40 km (25 mi) south of Salzburg. The castle is surrounded by the Berchtesgaden Alps and the adjacent Tennengebirge mountain range. The fortification is a "sister" of Hohensalzburg Castle also dated from the 11th century AD. Hohenwerfen Castle is situated at an height of 623 meters. Nowadays it is used as adventure castle.
Alcázar of Segovia. Segovia Castle, located in an ancient town of Segovia in central Spain, started off as an Arab fort in the century. In the Middle Ages Alcazar was a key fortress in the defense of the country.