Burg Neuenstein, Medieval castle in Saasen, Germany

Burg Neuenstein is a castle located in Neuenstein in the Hersfeld-Rotenburg district of northern Hesse. The structure features a tower rising about 28 meters (92 feet) and sits on elevated ground with views across the surrounding landscape.

The castle was founded around 1250 by Albert I of Wallenstein and first appeared in documents in 1267 as Neuwallenstein. Following its destruction in 1318 on the orders of Abbot Simon I of Buchenau, it received permission to be rebuilt in 1357.

The name Neuenstein, or Neuwallenstein, ties the castle to the Wallenstein counts who built it. After the last Wallenstein died in 1745, the site became a Hessian hunting lodge and later housed forestry offices until 1997. Since 2022 the Knüll Nature Park has had its office in the castle.

The site has served as a conference and event center since 2003 following extensive renovations by the municipality between 2002 and 2003. Visitors should be aware that the grounds may be in use for private events, which can affect access to certain areas.

The castle was first mentioned in 1267 as "Neuwallenstein" in a exchange contract between Albert II of Wallenstein and Abbot Heinrich III of Hersfeld. The name means "New Wallenstein", distinguishing it from the older Wallenstein Castle six kilometres to the northwest, from which Albert I had moved.