1235-1142 - Roman Pharos, an ancient lighthouse, at Dover Castle, Dover, Kent, England, United Kingdom, Europe

1245-3585 - Virgin Mary Flevariotissa Church, Venetian Castle, Akrotiri Village, Santorini (Thira) Island, Cyclades, Greek Islands, Greece, Europe

1245-3332 - Tower of the Lykourgos Logothetis Castle, Pythagoreio, Samos Island, North Aegean, Greek Islands, Greece, Europe

1160-5348 - View over Stolberg with St. Martini church, Saigerturm tower and castle, Harz, Saxony-Anhalt, Germany, Europe

1245-2821 - Venetian Fortezza Castle, City of Rethymno, Rethymno Region, Crete, Greek Islands, Greece, Europe

1235-1145 - Dover Castle Great Tower Descending staircase, Dover, Kent, England, United Kingdom, Europe

1235-1143 - St. Mary in Castro church and Roman Pharos, an ancient lighthouse, at Dover Castle, Dover, Kent, England, United Kingdom, Europe

1235-93 - Tower in the Castle of Kruje, Kruje, Albania, Europe

1184-8869 - Havana Castle of the Royal Force (Castillo de la Real Fuerza), UNESCO World Heritage Site, Havana, Cuba, West Indies, Central America

1336-958 - The tower and gate of a medieval castle in a small town during a winter night with fog, Castello di Seravalle, Emilia Romagna, Italy, Europe

1361-189 - Aerial view of the fortified tower with the light house built on top of Capo Passero island at sunrise, Capo Passero island, Portopalo di Capo Passero municipality, Siracusa province, Sicily, Italy, Mediterranean, Europe

1361-184 - Aerial view of the fortified tower and island of Capo Passero at sunrise, Capo Passero island, Portopalo di Capo Passero municipality, Siracusa province, Sicily, Italy, Mediterranean, Europe

845-1130 - Cliffords Tower, York, Yorkshire, England, United Kingdom, Europe

1358-177 - Rye Castle (Ypres Tower), built around 1249 to resist attacks from France, sometime prison, courthouse and morgue, now a museum, Rye, East Sussex, England, United Kingdom, Europe

1359-902 - State Castle and Chateau Cesky Krumlov tower, UNESCO, Cesky Krumlov, South Bohemian Region, Czech Republic (Czechia), Europe

1359-882 - State Castle and Chateau Cesky Krumlov tower seen from narrow Masna street, UNESCO World Heritage Site, Cesky Krumlov, South Bohemian Region, Czech Republic (Czechia), Europe

1359-872 - State Castle and Chateau Cesky Krumlov tower seen from narrow alley, UNESCO World Heritage Site, Cesky Krumlov, South Bohemian Region, Czech Republic (Czechia), Europe

1359-870 - Historic town of Cesky Krumlov and Cesky Krumlov Caste Tower, UNESCO World Heritage Site, Cesky Krumlov, South Bohemian Region, Czech Republic (Czechia), Europe

1359-866 - Historic town of Cesky Krumlov and Cesky Krumlov Caste Tower framed by opening, UNESCO World Heritage Site, Cesky Krumlov, South Bohemian Region, Czech Republic (Czechia), Europe

1359-633 - Detail of Tower of Loket Castle, Loket, Czech Republic (Czechia), Europe

1336-835 - The ruined tower and wall of the Muslim Ajlun Castle, Jordan, Middle East

1184-7793 - Fortified tower, Fayfa mountain, Jazan province, Saudi Arabia

1336-643 - Ancient castle of Vignola (Rocca di Vignola) framed by trees, Vignola, Emilia Romagna, Italy, Europe

832-397165 - Weathered wooden door, entrance to historical dungeon, dungeon, medieval prison in the town tower, Old Town, Lich, Wetterau, Hesse, Germany, Europe

1346-129 - Besalu historic medieval city with Catalonia flags on the stone bridge tower crossing El Fluvia river, Besalu, Catalonia, Spain, Europe

1346-130 - Besalu historic medieval city with Catalonia flags on the stone bridge tower crossing El Fluvia river, Besalu, Catalonia, Spain, Europe

1346-128 - Besalu historic medieval city with Catalonia flags on the stone bridge tower crossing El Fluvia river, Besalu, Catalonia, Spain, Europe

698-3537 - Bamburgh Castle and Bamburgh Castle walls from Bamburgh Village, Northumberland, England, United Kingdom, Europe

1131-1723 - Treason's Gate and ramparts, Trancoso Castle, Serra da Estrela, Centro, Portugal, Europe

1131-1724 - Treason's Gate and ramparts at twilight, Trancoso Castle, Serra da Estrela, Centro, Portugal, Europe

1131-1722 - Castle and tower, Sortelha, Serra da Estrela, Beira Alta, Centro, Portugal, Europe

1131-1728 - Trancoso old town viewed from the castle ramparts, Trancoso, Serra da Estrela, Centro, Portugal, Europe

1131-1727 - View to the castle, Trancoso, Serra da Estrela, Centro, Portugal, Europe

832-395619 - Fortified defence tower in Ouranoupoli, long exposure, sunset, overlooking the sea, Athos, Chalkidiki, Greece, Europe

832-395685 - Braunfels Castle, with Hubertus Tower, New Keep, Georgturm and Old Stock Braunfels, Hesse, Germany, Europe

844-25342 - View of Bolsover Castle and morning red sky, Bolsover, Derbyshire, England, United Kingdom, Europe

1292-2667 - Estense Castle, Ferarra, UNESCO World Heritage Site, Emilia-Romagna, Italy, Europe

1292-2665 - Estense Castle, Ferarra, UNESCO World Heritage Site, Emilia-Romagna, Italy, Europe

1292-2670 - Estense Castle, Ferarra, UNESCO World Heritage Site, Emilia-Romagna, Italy, Europe

1292-2668 - Estense Castle, Ferarra, UNESCO World Heritage Site, Emilia-Romagna, Italy, Europe

1292-2666 - Estense Castle, Ferarra, UNESCO World Heritage Site, Emilia-Romagna, Italy, Europe

1336-433 - Medieval castle of Torrechiara with square towers on a hill on a foggy day, Torrechiara, Emilia Romagna, Italy, Europe

1292-2642 - The castle, Brescia, Lombardia (Lombardy), Italy, Europe

1292-2617 - Rocca Maggiore, Assisi, UNESCO World Heritage Site, Perugia, Umbria, Italy, Europe

1292-2609 - The Arsenal, Venezia (Venice), UNESCO World Heritage Site, Veneto, Italy, Europe

1160-4906 - Lichtenstein Castle, Swabian Jura, Baden-Wurttemberg, Germany, Europe

1160-4900 - Castle ruin, Ehrenfels, Upper Middle Rhine Valley, Hesse, Germany, Europe

1160-4902 - Furstenberg Castle, Oberdiebach, Rhine Valley, Rhineland-Palatinate, Germany, Europe

1160-4905 - View over Engelsburg Castle to Gutenfels Castle, Kaub, Rhine Valley, Rhineland-Palatinate, Germany, Europe

1160-4903 - Mauseturm Tower and castle ruin, Ehrenfels, Bingen, Upper Middle Rhine Valley, Rhineland-Palatinate, Germany, Europe

1160-4901 - Castle ruin, Ehrenfels, Upper Middle Rhine Valley, Hesse, Germany, Europe

1160-4904 - Stahleck Castle and Rhein River, Bacharach, Upper Middle Rhine Valley, Rhineland-Palatinate, Germany, Europe

1160-4892 - Renaissance Castle Pfedelbach, Hohenlohe, Baden-Wurttemberg, Germany, Europe

1160-4889 - Kirchberg Castle reflecting in Jagst River, Kirchberg an der Jagst, Hohenlohe, Baden-Wurttemberg, Germany, Europe

1292-2547 - Rocca Calascio, Calascio, L'Aquila, Abruzzo, Italy, Europe

1292-2543 - Rocca Calascio, Calascio, L'Aquila, Abruzzo, Italy, Europe

1292-2544 - Rocca Calascio, Calascio, L'Aquila, Abruzzo, Italy, Europe

1336-425 - Rosenborg Castle in Kings Garden, Copenaghen, Denmark, Europe

1292-2419 - Rocca dei Borgia, Nepi, Viterbo, Lazio, Italy, Europe

1292-2417 - Rocca dei Borgia, Nepi, Viterbo, Lazio, Italy, Europe

1292-2420 - Rocca dei Borgia, Nepi, Viterbo, Lazio, Italy, Europe

1292-2421 - Porta Nica, Nepi, Viterbo, Lazio, Italy, Europe

1292-2196 - Castle of Rosazza, Val di Cervo, Biella, Piedmont, Italy, Europe

1292-2207 - Castle of Roreto, Val di Cervo, Biella, Piedmont, Italy, Europe

1292-2203 - Castle of Roreto, Val di Cervo, Biella, Piedmont, Italy, Europe

1292-2204 - Castle of Roreto, Val di Cervo, Biella, Piedmont, Italy, Europe

1292-2197 - Castle of Rosazza, Val di Cervo, Biella, Piedmont, Italy, Europe

1292-2205 - Castle of Roreto, Val di Cervo, Biella, Piedmont, Italy, Europe

1292-2195 - Castle of Rosazza, Val di Cervo, Biella, Piedmont, Italy, Europe

1292-2106 - Gavi, Alessandria, Piedmont, Italy, Europe

1242-495 - Berze Castle (Forteresse de Berze) the largest fortress in southern Burgundy dating from between 11th and 14th centuries, Berze-le-Chatel, Saone-et-Loire, Burgundy, France, Europe

1242-481 - Chateau dating from between 14th and 19th centuries, of the town of La Clayette, Saone-et-Loire, in southern Burgundy, France, Europe

1242-496 - Berze Castle (Forteresse de Berze) the largest fortress in southern Burgundy dating from between 11th and 14th centuries, Berze-le-Chatel, Saone-et-Loire, Burgundy, France, Europe

1242-482 - Chateau dating from between 14th and 19th centuries, of the town of La Clayette, Saone-et-Loire, in southern Burgundy, France, Europe

1242-483 - Chateau dating from between 14th and 19th centuries, of the town of La Clayette, Saone-et-Loire, in southern Burgundy, France, Europe

1242-480 - Chateau dating from between 14th and 19th centuries, of the town of La Clayette, Saone-et-Loire, in southern Burgundy, France, Europe

1336-400 - Medieval castle of Vignola with fortified tower, framed by tree branches, Vignola, Emilia Romagna, Italy, Europe

1292-1894 - Lombardy Castle, Enna, Sicily, Italy, Europe

1292-1851 - Pepoli tower, Erice, Trapani, Sicily, Italy, Europe

1292-1855 - Pepoli tower, Erice, Trapani, Sicily, Italy, Europe

1292-1854 - Pepoli tower, Erice, Trapani, Sicily, Italy, Europe

1292-1852 - Norman Castle, Erice, Trapani, Sicily, Italy, Europe

1292-1856 - Erice, Trapani, Sicily, Italy, Mediterranean, Europe

1350-5042 - Grimaud Castle, Grimaud, Cote D,??Azur, France

1350-4918 - Remains of ancient fortress walls, Nessebar, Bulgaria

1350-4906 - Remains of ancient fortress walls, Nessebar, Bulgaria

1350-4993 - Grimaud Castle, Grimaud, Cote D,??Azur, France

1350-4823 - Outer walls of the Ark Fortress, Registan Square, Bukhara, Uzbekistan

1350-5039 - Belvedere Castle, Central Park, Manhattan, New York City, New York, USA

1160-4747 - Dicker Turm tower at the castle, Esslingen am Neckar, Baden-Wurttemberg, Germany, Europe

1160-4742 - Dicker Turm tower at the castle, Esslingen am Neckar, Baden-Wurttemberg, Germany, Europe

1176-1389 - The Tower of London, 11th century medieval Norman castle that houses the Crown Jewels, UNESCO World Heritage Site, City of London, London, England, United Kingdom, Europe

1131-1664 - Castle bell and clock tower, Castelo Novo, Historic village around Serra da Estrela, Castelo Branco district, Beira, Portugal, Europe

844-23962 - View of Castle, Balmoral Hotel and Princes Street from Calton Hill, Edinburgh, Scotland, United Kingdom, Europe

844-23961 - View of Castle, Balmoral Hotel and Princes Street from Calton Hill, Edinburgh, Scotland, United Kingdom, Europe

1339-29 - Morro Castle and lighthouse guard the entrance to Havana Bay, Havana, Cuba, West Indies, Central America

1339-27 - Morro Castle and lighthouse guard the entrance to Havana Bay, Havana, Cuba, West Indies, Central America

832-392766 - Castle ruin with fortified defence tower, Burgthann, Nuremberg County, Middle Franconia, Franconia, Bavaria, Germany, Europe

844-23706 - View of the King's Tower at Knaresborough Castle, Knaresborough, North Yorkshire, England, United Kingdom, Europe

844-23704 - View of the King's Tower at Knaresborough Castle, Knaresborough, North Yorkshire, England, United Kingdom, Europe