| Waldsteinburg | |
|---|---|
 The castle ruins | |
  Location within Germany | |
| Alternative names | Red Castle (Rotes Schloss) |
| General information | |
| Classification | Ruins. In 2007 section of wall were broken off |
| Location | Zell im Fichtelgebirge |
| Coordinates | 50°07′44″N 11°51′18″E / 50.12889°N 11.855°E |
| Completed | first mentioned in 1350 |
| Owner | Ritterschaft |
| Height | 877 m above sea level (NN) |
| Technical details | |
| Structural system | individual rusticated ashlars |
The Waldsteinburg, also called the Red Castle (German: Rotes Schloss) is a ruined castle on the summit of the Großer Waldstein in the Fichtel Mountains of Germany. It is also known as the Westburg ('west castle') to distinguish it from the older ruins of the Ostburg ('east castle').