1160-2825 - La Cite, medieval fortress city, Carcassonne, UNESCO World Heritage Site, Languedoc-Roussillon, France, Europe

1131-739 - Wernigerode Castle, Harz, Saxony-Anhalt, Germany, Europe

739-1359 - Tourelles Castle, Vernon, Normandy, France, Europe

1184-255 - Porte Cailhau historic entrance gate to the city of Bordeaux, Aquitaine, France, Europe

1160-2732 - La Cite, medieval fortress city, Carcassonne, UNESCO World Heritage Site, Languedoc-Roussillon, France, Europe

785-1948 - The medieval walled town of Carcassonne, UNESCO World Heritage Site, Languedoc-Roussillon, France, Europe

849-1577 - The Chateau des Ducs de Bretagne in the city of Nantes, Loire-Atlantique, France, Europe

828-893 - Burg Gutenfels, UNESCO World Heritage Site, and River Rhine, Rhineland Palatinate, Germany, Europe

1184-188 - Weisser Turm (White Tower) in the pedestrian zone, Nuremberg, Bavaria, Germany, Europe

1160-2706 - Botanical garden, castle gardens, Karlsruhe, Baden Wurttemberg, Germany, Europe

849-1505 - Detail shot of the roof of the Chateau de Chambord, UNESCO World Heritage Site, Loir-et-Cher, Centre, France, Europe

849-1504 - Detail shot of the roof of the Chateau de Chambord, UNESCO World Heritage Site, Loir-et-Cher, Centre, France, Europe

849-1503 - The beautiful masonry of the Chateau de Chambord, UNESCO World Heritage Site, Loir-et-Cher, Centre, 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

1184-68 - Glenveagh castle on lake Lough Beagh in the Glenveagh National Park, County Donegal, Ulster, Republic of Ireland, Europe

1184-67 - Glenveagh castle in the Glenveagh National Park, County Donegal, Ulster, Republic of Ireland, Europe

741-4959 - Aigues-Mortes, Camargue, Gard, Languedoc-Roussilon, France, Europe

1175-272 - Trams in the old shopping street Ilica, Zagreb, Croatia

1178-19388 - Low angle view of power lines on poles

1178-22221 - Towering trees, Hood River, Oregon

1178-19703 - Communication tower and power lines

1178-24182 - Illuminated Chateau Frontenac seen from boardwalk, Quebec, Canada

1178-19389 - Low angle view of power lines on poles

1178-19607 - Oil storage containers

1178-15007 - Puerto Rico, Old San Juan, section of El Morro Fortress

1178-19674 - Communication towers and power lines

1178-19385 - Low angle view of power lines on poles

1178-19694 - Communication towers and power line

1178-19678 - Communication towers and power lines

1178-15000 - Puerto Rico, Old San Juan, section of El Morro Fortress

1178-19695 - Cement factory

1178-15005 - Puerto Rico, Old San Juan, section of El Morro Fortress

1178-19384 - Low angle view of power lines on poles

1178-19709 - Communication tower and power lines

1178-14996 - Puerto Rico, Old San Juan, section of El Morro Fortress

1178-19598 - View of Brooklyn, New York

1178-19794 - Truck at factory

1178-19386 - Low angle view of power lines on poles

1178-19532 - Cement trucks parked at cement plant

1178-19662 - Communication tower and power lines

1178-14998 - Puerto Rico, Old San Juan, turret of El Morro Fortress

1178-15002 - Puerto Rico, Old San Juan, section of El Morro Fortress

1178-19560 - Cooling towers of industrial plant

1178-19679 - Communication towers and power lines

1178-16562 - Turret Arch Arches National Park Moab Utah USA

1178-14997 - Puerto Rico, Old San Juan, section of El Morro Fortress under blue sky

1178-19698 - Communication tower

1178-15003 - Puerto Rico, Old San Juan, section of El Morro Fortress

1178-19387 - Low angle view of power lines on poles

1178-13954 - Puerto Rico, Old San Juan, section of El Morro Fortress

1178-13957 - Puerto Rico, Old San Juan, section of El Morro Fortress

1178-13956 - Puerto Rico, Old San Juan, section of El Morro Fortress

1178-13951 - Puerto Rico, Old San Juan, section of El Morro Fortress

1178-13094 - Young Boy in front of Turret Arch, Arches National Park, Utah

816-8381 - The castle, Obidos, Estremadura, Portugal, Europe

1178-11120 - Senglea Point parapet, Valleta, Malta

1178-11132 - Tower of Charles Bridge, Prague

1178-11146 - Television Tower in Prague

1178-11118 - Senglea Point parapet, Valleta, Malta

1178-11184 - Low angle view of historical cathedral

1178-11173 - Silhouetted statue and cathedral

1178-11143 - Old Town Hall in Prague

1178-11140 - Clock of Saint Vitus Cathedral in Prague

1178-11119 - Senglea Point parapet, Valleta, Malta

1178-11127 - Bell tower of Mdina Cathedral, Malta

1178-11135 - Loreta Church in Prague

1178-11174 - Sunset over silhouetted cathedral

1178-11121 - Senglea Point parapet, Valleta, Malta

911-10634 - Glengorm Castle near Tobermory, Isle of Mull, Scotland, UK.

1178-9326 - Sunset over silhouetted cathedral

1178-9327 - Sunset over silhouetted cathedral

1178-9164 - Workers climbing towers of construction site in Las Vegas

1178-9243 - St. Paul’s Street sign and Mdina Cathedral, Malta

1178-9246 - Carmelite church, Mdina, Malta

1178-9325 - Silhouetted statue and cathedral

1178-2689 - City rooftops and the Duomo Santa Maria Del Fiore, Florence, Italy

1178-2831 - Low angle view of cathedral

1178-2798 - Building facade and church bells, Mission San Diego de Alcala, San Diego, California, United States

1178-2688 - City rooftops and the Duomo Santa Maria Del Fiore, Florence, Italy

1176-152 - The 13th century medieval castle and gardens in Marvao, built by King Dinis, Marvao, Alentejo, Portugal, Europe

1176-153 - The 13th century medieval castle in Marvao, built by King Dinis, Marvao, Alentejo, Portugal, Europe

1178-2170 - Water Tower detail Chicago Illinois USA

1178-2263 - City rooftops and the Duomo Santa Maria Del Fiore, Florence, Italy

1178-2262 - City rooftops and the Duomo Santa Maria Del Fiore, Florence, Italy

1178-2150 - Church bells, Mission San Diego de Alcala, San Diego, California, United States

1178-2171 - Water Tower detail Chicago Illinois USA

1178-2151 - Entrance of church, Mission San Diego de Alcala, San Diego, California, United States

846-2193 - Caernarfon Castle,UNESCO World Heritage Site, on the River Seiont, Caernarfon, Snowdonia, Gwynedd, Wales, United Kingdom, Europe

846-2192 - Caernarfon Castle, UNESCO World Heritage Site, on the River Seiont, Caernarfon, Snowdonia, Gwynedd, Wales, United Kingdom, Europe

797-11803 - Egypt, Alexandria, Citadel of Qaitbay, also known as Fort of Qaitbay.

797-11972 - Spain, Catalunya, Barcelona, Montjuic, A side turret of the Palau Nacional which was built for the 1929 International Exhibition in Barcelona and now houses the National Art Museum of Catalonia.

797-11971 - Spain, Catalunya, Barcelona, Montjuic, View through pillars of a side turret of the Palau Nacional which was built for the 1929 International Exhibition in Barcelona and now houses the National Art Museum of Catalonia.

762-716 - Lindisfarne Castle, Holy Island, Northumberland, England, United Kingdom, Europe

762-713 - Dunstanburgh Castle, Northumberland, England, United Kingdom, Europe

762-712 - Bamburgh Castle at dusk, Northumberland, England, United Kingdom, Europe

762-715 - Lindisfarne Castle, Holy Island, Northumberland, England, United Kingdom, Europe

762-714 - Dunstanburgh Castle, Northumberland, England, United Kingdom, Europe

846-2169 - Broadway Tower on frosty morning, Broadway, Cotswolds, Worcestershire, England, United Kingdom, Europe

846-2170 - Broadway Tower on frosty morning, Broadway, Cotswolds, Worcestershire, England, United Kingdom, Europe