Kis-kő

Hungary

Kishangarh Fort

India

Kishiwada Castle

Japan

Kisnána Castle

Hungary

Kisvárda Castle

Hungary

Kitanosho Castle

Japan

Kitsuki Castle

Japan

Kittur Fort

India

Kiviloo Castle

Estonia

Kiyosu Castle

Japan

Kjellestad

Norway

Kjos Manor

Norway

Kjørbo

Norway

Klaipėda Castle

Lithuania

Klaverblad Castle

Belgium

Klenovnik Castle

Croatia

Kletsk Castle

Belarus

Kliczków Castle

Poland

Kliczków Mały

Poland

Klintholm slot

Denmark

Klis Fortress

Croatia

Klissza Castle

Hungary

Ključ Castle

Bosnia and Herzegovina

Klosterruine Arnoldstein

Austria

Knabstrup Manor

Denmark

Knin Fortress

Croatia

Knockdrin Castle

Ireland

Knutstorp Castle

Sweden

Private residence

Koberg Castle

Sweden

Private residence

Kobryn castles

Belarus

Not preserved

Kodak fortress

Ukraine

Koerich Castle

Luxembourg

Kohneh Castle, Zendeh Jan

Iran

Kohneh Qal'eh, Meshginshahr

Iran

Kohneh Qal'eh, Zafaraniyeh

Iran

Kohneh castle, Shaab Jereh

Iran