| Wilhelmsburg Castle | |
|---|---|
Schloss Wilhelmsburg | |
 Southwest facade of the castle | |
 | |
| General information | |
| Town or city | Schmalkalden |
| Country | Germany |
| Coordinates | 50°43′23″N 10°27′21″E / 50.72306°N 10.45583°E |
| Construction started | 1584 |
| Completed | 1618 |
| Inaugurated | 23 May 1590 |
The Wilhelmsburg Castle in the city of Schmalkalden was a secondary residence of the Landgraves of Hesse. It is one of the most important Renaissance buildings in central Germany, which has experienced no structural changes to this day and is preserved in almost its original condition.