Eilean Donan Castle, Scotland (by ralph.stewart)

Vajdahunyad castle, Budapest, Hungary (by Luca Santoro Photography ©)

Castello di Duino, Italy (by paolo dell’angelo)

Lichtenwalde Palace, Germany (by Tobi_2008)

Trakoscan Castle, Croatia (by Boris Frkovic)

Chateau de Chenonceau, France (by bloomsday616)

Tattershall Castle, England (by Andy Watson1)

Schloss Fürstenau, Germany (by Elfbuchenwald)

Oberhofen am Thunersee, Switzerland (by alainmichot93)

Trakai, Lithuania (by Prinz Wilbert)