New Fortress, Corfu

Greece

Venetian period

New Jerusalem Monastery

Russia

New Navarino fortress

Greece

Ottoman period

New Petegem-aan-de-Schelde Castle

Belgium

New Sint-Agatha-Rode Castle

Belgium

Nhavigad

India

Niasvizh Castle

Belarus

Nichols Hall

the United States

Nidzica Castle

Poland

Niedzica Castle

Poland

Nielerbroek Castle

Belgium

Niels Bugges Hald

Denmark

Niemcza

Poland

Niemodlin

Poland

Niepołomice Castle

Poland

Niesytno Castle

Poland

Nieuwenhoven Castle

Belgium

Nieuwerkerken Castle

Belgium

Nieuwermolen Castle

Belgium

Nieuwland Castle

Belgium

Nihonmatsu Castle

Japan

Nijenbeek Castle

the Netherlands

Nijenrode Castle

the Netherlands

Nijō Castle

Japan

Nik Shahr castle

Iran

Nimgiri-Hanumantgad fort

India

Nimrod Fortress

Syria

Nirayama Castle

Japan

Nirengi Castle

Japan

Nishikawa Castle

Japan

Nitra Castle

Slovakia

Niyal Castle

Azerbaijan

Nizamabad Fort

India

Nizhny Novgorod Kremlin

Russia

Nizhyn Castle

Ukraine

Niš Fortress

Serbia

Restored