Kohoj

India

Kokemäki Castle

Finland

Totally ruined

Koknese Castle

Latvia

Impressive ruins

Kokura Castle

Japan

Kolaba Fort

India

Koldinghus Castle

Denmark

Kolm castle

Iran

Kolmont Castle (''Kasteel van Kolmont'')

Belgium

Kolomna Kremlin

Russia

Kolossi CastleΚάστρο του Κολοσσιού

Cyprus

13th century

Koluvere Castle

Estonia

Kolárovo Castle

Slovakia

Komakiyama Castle

Japan

Komine Castle

Japan

Komoro Castle

Japan

Konary Castle

Poland

Konda Reddy Fort

India

Kondapalli Fort

India

Kondaveedu Fort

India

Kondor castle

Iran

Konevsky Monastery

Russia

Kong Portuguese castle

Iran

Kongstedlund

Denmark

Konin

Poland

Konkan Diva Fort

India

Koopmans-de Wet House

South Africa

Kopaszhegy

Hungary

Koporye Kremlin

Russia

Koppal Fort

India

Koprivnik Castle

Slovenia

Kopychyntsi

Ukraine

Kopys

Belarus

Kordasht castle

Iran

Korela Fortress

Russia

Korets Castle

Ukraine

Korfantów Castle

Poland