| Nassau Castle | |
|---|---|
| Nassau, Germany | |
 Nassau Castle (aerial view) | |
 Nassau Castle - Compound wall | |
| Coordinates | 50°18′37″N 7°47′31″E / 50.31028°N 7.79194°E |
| Type | Castle |
| Height | 33 m |
| Site information | |
| Open to the public | yes |
| Condition | partially restored ruins |
| Site history | |
| Built | ca. 1100 |
| Built by | Dudo of Laurenburg |
Nassau Castle, located in Nassau, Rhineland-Palatinate, Germany, was the original seat of the House of Nassau. The ruins of the castle are situated on a rock outcropping about 120 m (390 ft) above the Lahn River. The House of Nassau was an aristocratic dynasty among whose descendants are the present-day monarchy of the Netherlands and Luxembourg.