Grand Ducal Palace, Luxembourg

Luxembourg

Granhammar Castle

Sweden

No function

Gravenhof Castle (''Kasteel Gravenhof'')

Belgium

Gravensteen

Belgium

Restored · Castle

Graventoren Castle ( Burchtruïne Graventoren )

Belgium

Great Castle

the Netherlands

Greater Accra Region

Ghana

Greben Fort

Bosnia and Herzegovina

Greencastle

Ireland

Grey Court

the United States

Grey Towers Castle

the United States

Grimsrød

Norway

Grimstrup

Denmark

Grinzane Cavour Castle

Italy

Gripenberg Castle

Sweden

Private residence

Gripsholm Castle

Sweden

Museum

Grižane Castle

Croatia

Grobiņa Castle

Latvia

Ruins

Grobnik Castle

Croatia

Grodno Castle

Poland

Grodziec Castle

Poland

Grodztwo Castle

Poland

Groenendaal Castle (''Kasteel Groenendaal'')

Belgium

Groeneveld Castle (''Kasteel Groeneveld'')

Belgium

Groeningenhof Castle

Belgium

Groot Constantia

South Africa

Groot Peteren Castle

Belgium

Groot-Bijgaarden Castle

Belgium

Restored · Castle

Groote Schuur

South Africa

Gropparello

Italy

Grosio

Italy

Grosseto

Italy

Grosso Castle

Italy

Grudziądz Fortress

Poland

Gruitrode Commandery ( Commanderij van Gruitrode )

Belgium

Gruuthuse

Belgium