Hallwyl Castle is one of the most important moated castles in Switzerland.
Vindonissa was a Roman legion camp, vicus and later a bishop's seat at modern Windisch, Switzerland.
Aarburg Castle is a castle in the municipality of Aarburg in the canton of Aargau in Switzerland.
Lenzburg Castle is a castle located above the old part of the town of Lenzburg in the Canton of Aargau, Switzerland.
Habsburg Castle is a medieval fortress located in what is now Habsburg, Switzerland, in the canton of Aargau, near the Aar River.
Biberstein Castle is a castle in the municipality of Biberstein in the Swiss canton of Aargau.
Stein Castle is a castle ruin above the municipality of Baden in the canton of Aargau in Switzerland.
Schenkenberg Castle is a castle ruin above the municipality of Thalheim in the canton of Aargau in Switzerland.
Altenburg Castle is a castle in the village of Altenburg bei Brugg in the municipality of Brugg in the canton of Aargau in Switzerland.
Freudenau Castle is a ruined fort in the municipality of Untersiggenthal of the Canton of Aargau in Switzerland.
Klingnau Castle is a castle in the municipality of Klingnau in the Swiss canton of Aargau.
Hilfikon Castle is a castle in the municipality of Hilfikon of the Canton of Aargau in Switzerland.