The Fort of Nossa Senhora da Penha de Franca, popularly known as the Fortaleza Ponta da Bandeira, built towards the end of the 17th century to defend the harbour, Lagos, Algarve, Portugal, Europe

Ramparts wall of castle Parador hotel, Siguenza, Guadalajara province, Spain, Europe

Historic castle in Alter do Chao, built in the 14th century, Alentejo, Portugal, Europe

The Fort of Nossa Senhora da Penha de Franca, popularly known as the Fortaleza Ponta da Bandeira, built towards the end of the 17th century to defend the harbour, Lagos, Algarve, Portugal, Europe

Trakai Castle illuminated at night, Trakai, near Vilnius, Lithuania, Baltic States, Europe

Cite de Carcassonne citadel, UNESCO World Heritage Site, Carcassonne, Aude, Occitania, France, Europe

Bran Castle, Bran, near Brasov, Transylvania. The castle was built by Saxons in 1377 who were given the privilege by Louis I of Hungary. It is a national monument and landmark in Transylvania and famous for its association with the Dracula story.

Hever Castle (1270-1470), childhood home of Anne Boleyn, Edenbridge, Kent, England, UK, Europe

Ljubljana Castle entrance with moat and drawbridge standing on Castle Hill, Ljubljana, Slovenia, Europe

Illuminated castle Castello di Montebello with draw bridge in UNESCO World Heritage Site Bellinzona, Bellinzona, Ticino, Switzerland

Hever Castle with a moat and a drawbridge, Hever, County of Kent, England, Great Britain, Europe

Drawbridge of Vischering castle in winter, Luedinghausen, Muensterland, North Rhine-Westphalia, Germany, Europe

Ruins of the Ruprechtsbau building with the drawbridge building of Heidelberg Castle, destroyed in 1689, view from Stueck-garden, Schlosshof, Heidelberg, Baden-Wuerttemberg, Germany, Europe

Reflection of a castle in water, Egeskov Castle, Funen County, Denmark

Castle at the waterfront, Egeskov Castle, Funen County, Denmark