Ipatiev Monastery

Russia

Iraj Castle

Iran

Irandegan castle

Iran

Irshalgad

India

Iru Hill Fort (Iru hill fort)

Estonia

Isegran

Norway

Built in to a fortress

Ishëm Castle

Albania

ruin

Islamgarh Fort

Pakistan

Ismail Khan castle

Iran

Ismantorp Fortress

Sweden

Ruin

Issogne Castle

Italy

Istia d'Ombrone

Italy

Ita Fort

India

Itami Castle

Japan

Itter Castle

Austria

Castle

Itzedin Fortress

Greece

Ottoman period

Iulia Hasdeu Castle

Romania

Ivanec Castle

Croatia

Ivangorod Fortress

Russia

Iviswold Castle

the United States

Ivrea Castle

Italy

Iwabitsu Castle

Japan

Iwakuni Castle

Japan

Iwamura Castle

Japan

Iwasaki Castle

Japan

Izad-Khast Castle

Iran

Izborsk Fortress

Russia

Izena Castle

Japan

Iziaslav Castle

Ukraine

Izushi Castle

Japan

Iłża

Poland

Jablje Castle

Slovenia

Jachtslot Sint Hubertus

the Netherlands

Jag Mandir

India

Jagdishpur Fort

India

Jagtial fort

India