Haus Overbach, Architectural heritage monument in Barmen, Jülich, Germany.

Haus Overbach is a castle surrounded by water channels near Jülich, positioned close to the Rur river and bordered by several nature reserves. The property combines residential buildings with a chapel, guest quarters, and meeting rooms spread across the grounds.

Haus Overbach was first documented as a knight's seat in 1341, when Johannes de Overbach issued a charter. Around 1450 the Grein von Aldenhoven family held the estate, and the vaulted cellars in the manor house date from that period. In 1792 Baron Reiner von Overschie-Wisbecq bought the property and had the old buildings demolished and replaced. In November 1918 the Salesians acquired it and turned it into a monastery and mission school.

The name Overbach comes from the knightly family first documented in 1341 with Johannes de Overbach; Heinrich von Overbach served as Hofmeister to Count Wilhelm of Jülich by 1334. Since the Salesians bought the estate in November 1918, it has housed a monastery and mission school, and today the Oblates of St. Francis de Sales run the Gymnasium Haus Overbach on the grounds.

Haus Overbach lies in the Barmen district of Jülich, and the grounds are shared by the Oblates' monastery, the order's administration and the Gymnasium Haus Overbach, so school activity shapes weekday access. Visitors should check with the order before entering the grounds, since the buildings serve religious and educational uses rather than regular public tours.

The vaulted cellars in the manor house date from around 1450, when the Grein von Aldenhoven family held the estate. Haus Overbach appears on a 16th-century map, but the noble seat was first sketched only around 1720 in the Codex Welser.