Batenburg Castle

The Valkhof museum is an archaeology and art museum in Nijmegen,

Doorwerth Castle is a medieval castle situated on the river Rhine near

Ammersoyen Castle (Nederlands. Kasteel Ammersoyen) is located in

Heeswijk Castle ('Kasteel Heeswijk') is a former water citadel near

Heeswijk Castle (Kasteel Heeswijk) is a former water citadel near

Lâu đài Duurstede là một lâu đài thời trung cổ ở Wijk bij Duurstede,

Castle Doornenburg is a Dutch castle from the 13th century.

The Roman Catholic Cathedral Church of St. John (Sint-Janskathedraal)

Rumkale was a powerful fortress on the river Euphrates, 50 km

Tsarevets (Bulgarian: Царевец) is a medieval stronghold located on a h

Tustan  was a Medieval cliff-side fortress-city and customs site of

The Rock of Cashel (Gaeilge. Carraig Phadraig), also known as Cashel

Hammershus is Northern Europe's largest medieval fortification,