18 palaces visited by Golden Key

Alhambra and Generalife

Buckingham Palace

Doge's Palace

Dolmabahce

Forbidden City

Greek Parliament

Les Invalides

Monster Park

Palais des Papes

Palazzo Farnese

Palazzo Vecchio

Pena National Palace

Potala Palace

Prince's Palace of Monaco

Summer Palace Beijing

Topkapi

Vaux-le-Vicomte

Vila Lante