Schloss Heiligenberg is a historic castle located just east of Jugenheim in Seeheim-Jugenheim, Germany, about 12 kilometers south of Darmstadt. Built in the early 19th century on the scenic Heiligenberg hill, the castle is renowned for its commanding views of the surrounding Rhineland and Palatinate.

It played a significant role in European history, serving as a residence for Grand Duchess Wilhelmine of Hesse-Darmstadt and her son Prince Alexander, whose marriage established the Battenberg/Mountbatten lineage linked to many royals across Europe. Throughout the late 19th and early 20th centuries, it hosted important diplomatic gatherings involving Russian, English, and Spanish royalty.

Today, Schloss Heiligenberg combines its fascinating history with a vibrant cultural life, offering concerts, art exhibitions, and tranquil walks in its gardens and park, drawing visitors keen to experience both the heritage and natural beauty of the Bergstrasse region.