Equestrian statue at Albertina Museum, largest Habsburg residential palace, Vienna, Austria, Europe

Muscat Palace, Oman.

Rooftop of Palau Guell, Barcelona, Catalonia, Spain

Rooftop of Palau Guell, Barcelona, Catalonia, Spain

old stables, Palau Güell, 1890, residential palace, modernism, arq Antoni Gaudi, Barcelona, Catalonia, Spain.

Lots of satellite dishes mounted to balconies on an apartment building facade, Pallasseum or "Berlin Social Palace" (Berliner Sozialpalast) apartment block in Schoenberg, Berlin, Germany, Europe

Lots of satellite dishes mounted to balconies on an apartment building facade, Pallasseum or "Berlin Social Palace" (Berliner Sozialpalast) apartment block in Schoenberg, Berlin, Germany, Europe

Exclusive office and residential building Palais at the Opera House with portico, former Palais Törring-Jettenbach, 1754, Max-Joseph-Platz, Munich, Upper Bavaria, Bavaria, Germany, Europe

View from the castle complex of the Alhambra to the former Moorish residential quarter Albaicin in Granada, Andalusia, Spain, Europe

Excursion steamer in front of the Bruehl Terrace on the Elbe, Church of Our Lady, Academy of Arts, Residenzschloss, Hofkirche, Semperoper, Dresden, Saxony, Germany, Europe

Hodzovo namestie fountain, Grassalkovich Palace, Residence Palace, Presidential Palace, Bratislava, Slovakia, Europe

Facade, countless satellite dishes at an apartment block known as the Pallasseum (formerly Berliner Sozialpalast, "Berlin Social Palace"), Schoeneberg district, Berlin, Germany, Europe

Hofkirche, St. Trinitatis Cathedral, Residenzschloss, Staendehaus, Terrace Shore, Evening Dawn, Dresden, Saxony, Germany, Europe

Residential Palace, Weimar, Thueringen, Deutschland, Europa

Exclusive office and residential building Palais at the Opera House with portico, former Palais Törring-Jettenbach, 1754, Max-Joseph-Platz, Munich, Upper Bavaria, Bavaria, Germany, Europe

Residential Palace, Weimar, Thueringen, Deutschland, Europa

Zollern Castle Balingen an der Eyach, Wehr, Balingen, Baden-Wuerttemberg, Germany, Europe

Wasserschloss Raesfeld, Muensterland, North Rhine-Westphalia, Germany, Europe

Inner courtyard and entrance to the Museum in the Residential Palace, Weimar, Thueringen, Deutschland, Europa

Wasserschloss Raesfeld, Muensterland, North Rhine-Westphalia, Germany, Europe

Aerial view of business district, Milan, Lombardy, Italy

Arched window with a view from Alhambra; Granada, Andalusia, Spain

Palace stone columns frames an alpine village in the background with mountains and blue sky, Trento, Trento, Italy