Nynäs Castle

Sweden

Museum

Nysa Castle

Poland

Nysø Manor

Denmark

Nyírbátor Castle

Hungary

Näs Castle

Sweden

Ruin

Näsby Castle

Sweden

Hotel

Näsbyholm Castle

Sweden

Private residence

Nääs Castle

Sweden

Museum

Næs verk

Norway

Næsbyhoved

Denmark

Næsholm

Denmark

Næsseslottet

Denmark

Nézsa Castle

Hungary

Nógrád Castle

Hungary

Nøisomhet

Norway

Nørholm Manor

Norway

Nørlund slot

Denmark

Nørre Vosborg

Denmark

Nălațvad

Romania

Oaklands

Canada

Obama Castle

Japan

Obbeek Castle

Belgium

Obere Burg

Liechtenstein

Obi Castle

Japan

Obreja

Romania

Obrovac Castle ('Gradina Obrovac')

Croatia

Obrovac Castle('Gradina Obrovac')

Croatia

Obsinnich Castle

Belgium

Ochre Court

the United States

Ocket Castle

Belgium

Ocland

Romania

Odani Castle

Japan

Odawara Castle

Japan

Odense Castle

Denmark

Odor Castle

Hungary

Odorheiu Secuiesc

Romania