Young people on the bank of the Canal surrounding the Old Town of Riga, in front of the National Opera House, Riga, Latvia, Baltic region, Europe

Fountain outside Old Town Opera House Svobody 28, Kiev, Ukraine, Europe

Opera House and city tram, Old Town, Wroclaw, Silesia, Poland, Europe

Alte Oper (Old Opera) with special christmas illumination of the fountain, Frankfurt, Hesse, Germany

National Theatre, neoclassical facade and pillars, Bavarian State Opera House at Max Joseph Square, Altstadt, Old Town, Munich, Upper Bavaria, Bavaria, Germany, Europe

Fountain with a spout in front of the Alte Oper, old opera, Frankfurt, Hesse, Germany, Europe

Semper Opera House, Theatreplatz square, Dresden, Saxony, Germany, Europe, PublicGround

Teatro Carlo Felice, theater, opera, old town, Genoa, Riviera, Liguria, Italy, Europe

View from Alte Oper Frankfurt, old opera house, across Opernplatz Square, Frankfurt am Main, Hesse, Germany, Europe

View from Alte Oper Frankfurt, old opera house, to Commerzbank and Helaba headquarters, Hessische Landesbank, federal bank for Hesse, Frankfurt am Main, Hesse, Germany, Europe

Town Hall and Opera House of the state capital, Kiel, Schleswig-Holstein, Germany, Europe

Old operahouse, Frankfurt, Hessen, Germany