18 palaces visited by Valentin Antimov

Belvedere Vienna

Doge's Palace

Dolmabahce

Greek Parliament

Hofburg

Hundertwasser House

Hungarian Parliament

Les Invalides

Lonja de la Seda

Mirabell Palace and Gardens

Oslo City Hall

Palace of Parliament

Presidential Palace

Schönbrunn Palace

Stockholm City Hall

Stockholm Royal Palace

Wroclaw City Hall

Zwinger