Schloss Reinsberg is a medieval castle complex whose origins date back to the 12th century. It was originally constructed as a fortified stronghold on a strategically positioned rocky elevation, intended to control surrounding trade routes and the nearby territory.

During the 16th century, parts of the defensive structure were transformed into a Renaissance-style residence. Despite these changes, significant medieval elements such as towers and sections of the surrounding walls were preserved. Over the centuries, the property changed ownership multiple times and underwent various structural modifications.

In the 19th and 20th centuries, the castle gradually lost its original function. During the period of state use in the 20th century, the complex was adapted for other purposes, leading to structural alterations and increasing maintenance issues.

After 1990, the castle passed into private ownership. At that time, the building was in poor structural condition, with unstable sections, leaking roofs, and deteriorated auxiliary buildings. To prevent further decay and collapse, stabilization measures were implemented. Severely damaged or later-added annexes were partially removed.

The works primarily focused on securing and preserving the historic core of the complex. This included roof repairs, structural reinforcement of walls, and conservation measures. A full historical restoration to a specific architectural period has not been carried out.

Today, the complex consists of a combination of medieval structures, Renaissance additions, and modern stabilization interventions. It remains largely privately owned and is not regularly accessible to the public.