Opera houses

Austria
Vienna - The Vienna State Opera
Vienna - Volksoper Vien

Belgium
Brussels

Czech Republic
Prague - Národní Divadlo Prague - National Theatre
Prague - State Opera Prague
Prague - Estates Theatre Prague Opera

Denmark
Copenhagen - The Royal Theatre
Copenhagen - The Copenhagen Opera House

Estonia
Tallinn - Estonia National Opera

Finland
Helsinki - Finnish National Opera

France
Paris

Germany
Berlin - State Opera House of Berlin
Berlin - Deutche Oper Berlin - German Opera
Leipzig - Oper Leipzig
Dresden - The Semper Opera House
Munich Opera

Hungary
Budapest - Budapest State Opera

Nederland
Amsterdam 

Norway
Oslo

Italy
Milan - Teatro alla Scala Milan
Naples
Rome
Torino
Venice - La Fenice

Latvia
Riga

Poland
Warsaw - Teatr Wielki - The Grand Theater
Krakov

Slovakia
Bratislava - Slovak National Theatre Bratislava

Sweden
Stockholm - Kungliga Teatern Stockholm - The Royal Theatre

Switzerland
Zurich