architectural landmarks in eu member countries

colosseum alhambra louvre acropolis brandenburg sagrada piazza potala reichstag versailles pantheon duomo eiffel kremlin prado guggenheim vasa hagia uffizi pergamon hermitage hofburg buckingham sistine leaning pisa retiro pompidou uppsala orsay elbphilharmonie chillon kronborg festung frauenkirche bolshoi neuschwanstein albertina marienplatz guell petersdom kurfurstendamm schonbrunn trevi plaka campidoglio ceausescu sanssouci rathaus mariinsky