| Castle of Valkenburg | |
|---|---|
| Valkenburg, the Netherlands | |
 Ruined castle of Valkenburg | |
  Castle of Valkenburg | |
| Coordinates | 50°51′43″N 5°49′52″E / 50.862°N 5.831°E |
| Type | Castle |
| Site information | |
| Owner | Foundation Velvet caves and Castle ruins Valkenburg |
| Open to the public | Yes |
| Condition | Ruine |
| Site history | |
| Built | 1115, 14th century |
| Built by | Lord van Suilen en Anholt |
| Materials | Dutch Marlstone (mergel) and wood. |
| Demolished | 1122 & 1672 |
Valkenburg Castle is a ruined castle in Valkenburg aan de Geul, Netherlands. It is unique in the Netherlands in that it is the only castle in the country built on a hill. The castle is listed in the top hundred of Dutch cultural monuments.