About palaces in various countries

Britain: Buckingham Palace, Clarence Palace, Brenim Palace, Windsor Castle (Summer Palace).

Norway: Kensington Palace

Denmark: Amalianbao Palace

Japan: Tokyo Imperial City

Monaco: The Royal Palace of Monaco

Brunei: Nu Leumann Palace

Spain: Spanish Palace, Madrid Palace, Alhambra Palace.

Sweden: Drotningholm Palace

Holland: The Royal Palace and the largest palace in the Netherlands.

Thailand: Thai Royal Palace and Chitarada Palace.

United States: White House

France: Versailles, Elysee Palace, Louvre and Fontainebleau Palace.

Istanbul: Berhol Palace

Russia: Kremlin, Peter Palace (Summer Palace)

Cambodia: The Royal Palace of Cambodia and Bandielei (namely Ban Diez Lei Temple).

Austrian: Hofburg Palace, Sch? nbrunn Palace (that is, Sch? nbrunn Palace) and Heilbrunn Palace.

Turkey: Topkapu Palace, Belor Palace.

China: Potala Palace and Forbidden City.

Myanmar: Mandalay Palace

Vietnam: Luang Prabang Palace Temple, Jianhua Palace

Germany: Worry-Free Palace, Hofburg Palace

North Korea: Changdeok Palace (Gong Yue), Gyeongbokgung Palace.

Nepal: Padangu Palace

Portugal: Pena Palace

Ottoman Empire: Mabacha Palace and Topca Pi Palace.

Italy: Naples Palace

North Korea: Anhe Palace (site)

Ancient Abomey Kingdom: Abomey Palace, located in the south of Benin.

Indonesia: Yogyakarta Palace

Knossos: Knossos Palace (Minos Palace)

The Forbidden City in Beijing is the largest in the world.

I don't know the list of palaces on all continents.