Strambino Castle

Italy

Strangford Castle

Ireland

Stremț

Romania

Streversdorp Castle

Belgium

Strečno Castle

Slovakia

Strijen Castle

the Netherlands

Strmol Castle

Slovenia

Strmol Mansion

Slovenia

Stronghold

the United States

Strumica Fortress

North Macedonia

Strusiv Castle

Ukraine

Strzegom

Poland

Strzygi

Poland

Strážky Manor

Slovakia

Strömsholm Palace

Sweden

Museum

Stubenberg Castle

Romania

Stubljan

Norway

Stupava Mansion

Slovakia

Sturdza Castle

Romania

Sturefors Castle

Sweden

Private residence

Sturehov Manor

Sweden

Museum

Subcetate

Romania

Succa Castle

Belgium

Suceava

Romania

Suchań

Poland

Sudhagad

India

Sujanpur Fort

India

Sulbiate

Italy

Sumargad

India

Sumoto Castle

Japan

Sumug Castle

Azerbaijan

Sundbyholm Castle

Sweden

Hotel

Sunomata Castle

Japan

Sunpu Castle

Japan

Suomenlinna

Finland

Largely restored

Surat Castle

India