832-403869 - Close up female hand folding yoga mat

832-398182 - Human hand holding compact fluorescent light bulb

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

1116-51226 - Old Irish castle ruins in a green field with the setting sun coming through the window hole; Clonlarra, County Clare, Ireland

1116-51475 - Castlebawn on the banks of Lough Derg surrounded in fog and mist at sunrise in autumn; Ogonnelloe, County Clare, Ireland

1350-1726 - Norman Keep, Cardiff Castle, Cardiff, Wales

1176-1215 - The round Norman Keep (Round Tower) in Windsor Castle with the Queen's flag (Royal Standard) flying, Windsor, Berkshire, England, United Kingdom, Europe

746-20405 - Entrance, Castle, Brescia, Lombardy, Italy

696-837 - Norman Keep in autumn, Cardiff Castle, Cardiff, Wales, United Kingdom, Europe

1167-1234 - Chateau Comtal keep, La Cite, historic fortified city, Carcassonne, UNESCO World Heritage Site, Languedoc-Roussillon, France, Europe

1167-1233 - Chateau Comtal keep, La Cite, historic fortified city, Carcassonne, UNESCO World Heritage Site, Languedoc-Roussillon, France, Europe

1167-835 - Bamburgh Cast in summer, from below, Northumberland, England, United Kingdom, Europe

1167-834 - Bamburgh Castle under a blue summer sky, Bamburgh, Northumberland, England, United Kingdom, Europe

306-4324 - Conisbrough castle, South Yorkshire, Yorkshire, England, United Kingdom, Europe

747-1610 - The 13th century Brougham Castle, interior view of the Great Keep, Penrith, Cumbria, England, United Kingdom, Europe

792-695 - Cliffords Tower, York Castle Keep, York, Yorkshire, England, United Kingdom, Europe

832-277473 - Tarasp castle canton of Graubuenden Grisons Switzerland in front of Lischana mountains

832-277475 - Stockalper castle Brig canton of Wallis Valais Switzerland

832-148297 - Oil tanks, tank building, back light, Kiel, Schleswig-Holstein, Germany, Europe

832-126972 - Castle of the Order of the Teutonic Knights, Tall Hermann Tower, seat of the Estonian parliament, Tallinn, formerly Reval, Estonia, Baltic States, Northern Europe

832-127020 - Keep with moat, castle of the Teutonic Knights, Cesis, Latvia, Baltic States, Northern Europe

832-126970 - Castle of the Order of the Teutonic Knights, Tall Hermann Tower, seat of the Estonian parliament, Tallinn, formerly Reval, Estonia, Baltic States, Northern Europe

832-126971 - Castle of the Order of the Teutonic Knights, Tall Hermann Tower, seat of the Estonian parliament, Tallinn, formerly Reval, Estonia, Baltic States, Northern Europe

832-127013 - Keep with bishop's castle, Turaida Castle, Turaida, Latvia, Baltic States, Northern Europe

832-128460 - Keep with staircase and viewing platform of the Ruine Hohenhewen ruins, Landkreis Konstanz county, Baden-Wuerttemberg, Germany, Europe

832-128459 - Portal and keep with viewing platform of the Ruine Hohenhewen ruins, Landkreis Konstanz county, Baden-Wuerttemberg, Germany, Europe

832-127012 - Keep with bishop's castle, Turaida Castle, Turaida, Latvia, Baltic States, Northern Europe

832-108118 - Blauer Turm keep, Bad Wimpfen, Baden-Wuerttemberg, Germany, Europe

832-108117 - Blauer Turm keep, Bad Wimpfen, Baden-Wuerttemberg, Germany, Europe

832-110615 - Keep of Gravensteen Castle, Ghent, East Flanders, Belgium, Europe

832-44277 - Plaque for Blauer Turm, The Blue Tower, western keep of the former Staufen Imperial Palace, historic town centre of Bad Wimpfen, Neckartal, Baden-Wuerttemberg, Germany, Europe, PublicGround

1113-14881 - Castell de Bellver with keep tower at dusk, Palma, Mallorca, Balearic Islands, Spain, Europe

1113-14882 - Castell de Bellver with keep tower at dusk, Palma, Mallorca, Balearic Islands, Spain, Europe

816-3811 - St. Agatha Tower (Red Keep) (Red Tower), Malta, Europe

816-3812 - St. Agatha Tower (Red Keep) (Red Tower), Malta, Europe

1116-1611 - Trim Castle, River Boyne, Trim, County Meath, Ireland

845-48 - The Castle Keep, Newcastle upon Tyne, Tyne and Wear, England, United Kingdom, Europe

696-376 - Norman Keep, Cardiff Castle, Cardiff, South Wales, Wales, United Kingdom, Europe

696-375 - Norman Keep, Cardiff Castle, Cardiff, South Wales, Wales, United Kingdom, Europe

797-8426 - England, Hampshire, Portsmouth, Portchester Castle showing the Norman 12th Century Tower and 14th Century Keep within the Roman 3rd Century Saxon Shore Fort.

797-8433 - England, Hampshire, Portsmouth, Portchester Castle showing the 12th Century Tower and 14th Century Keep built within the Roman 3rd Century Saxon Shore Fort.

698-2732 - Silhouette of Castle Stalker, a Tower House or Keep, used often as a film set, at sunset, Loch Laich, an inlet off Loch Linnhe, Port Appin, Argyll, Highlands, Scotland, United Kingdom, Europe

797-8170 - Ireland, County Cork, Blarney Castle Keep and Tower

698-2596 - Clifford's Tower, the former Keep of York Castle, named after Roger de Clifford who was hanged there in 1322, York, Yorkshire, England, United Kingdom, Europe

770-1752 - Haut-Koenigsbourg castle exterior walls and keep, a medieval castle overlooking the Rhine Plain, Haut Rhin, Alsace, France, Europe

685-2133 - Orford Castle with its unique polygonal tower keep, dating from the 12th century, Orford, Suffolk, England, United Kingdom, Europe

823-80 - Aerial image of Piel Castle (Fouldry Castle) (Fouldrey Castle), a concentric medieval fortification with a keep and three towers, Piel Island, Furness Peninsula, Barrow in Furness, Cumbria, England, United Kingdom, Europe

110-17229 - Karnen (keep), Helsingborg, Sweden, Scandinavia, Europe

700-11533 - Syria, 30 Km East Of Tartus In The Mountain, The Town Is Dominated By A Donjon Built By The French Crusaders At The End Of Xii Thc And Known As Chastel Blanc

251-4965 - Tower and keep of the castle at Falaise, birthplace of William the Conqueror, Basse Normandie (Normandy), France, Europe

190-8547 - The White Tower, Tower of London, UNESCO World Heritage Site, London, England, United Kingdom, Europe

190-8542 - The White Tower, Tower of London, UNESCO World Heritage Site, London, England, United Kingdom, Europe

197-2155 - The keep and Constable's tower on the right, Dunstanburgh Castle, Northumberland, England, United Kingdom, Europe

526-3275 - White Tower, Tower of London, UNESCO World Heritage Site, London, England, United Kingdom, Europe

526-3277 - White Tower, Tower of London, UNESCO World Heritage Site, London, England, United Kingdom, Europe

255-5053 - The Tower of London, UNESCO World Heritage Site, London, England, United Kingdom, Europe

114-2080 - White Tower, Tower of London, UNESCO World Heritage Site, London, England, United Kingdom, Europe