Gustavsburg Palace in Jägersburg
Originally a moated castle called Hattweiler built by the Counts of Zweibrücken-Bitsch in 1395, converted into a palace by Count Palatine Johann I in 1590.

Originally a moated castle called Hattweiler built by the Counts of Zweibrücken-Bitsch in 1395, converted into a palace by Count Palatine Johann I in 1590.
Attractions nearby

Saarbrücken
St. Arnual Dragon's Teeth (Westwall)
A 700-meter line of Westwall anti-tank obstacles on the Petersberg in Saarbrücken-St. Arnual - the final construction phase of 1940, now a listed monument.

Saarbrücken
The Burning Mountain near Dudweiler
Not really a mountain but a rocky ravine - a coal seam has been smoldering inside it for more than 300 years. Goethe visited the Burning Mountain in 1770.

Merzig
Dagstuhl Palace
A baroque palace of 1760 at the foot of the older Dagstuhl castle near Wadern, with a chapel holding a Stations of the Cross and a crypt. Since 1989 it has housed the Leibniz Center for Informatics.