Burg Hemmersbach, Medieval moated castle in Horrem, Kerpen, Germany.

Burg Hemmersbach is a medieval moated castle with a central building surrounded by water, situated in a wooded area. The complex contains multiple rooms and sleeping quarters that make it a substantial estate for gatherings and overnight stays.

First recorded in 980 when Wigmannus von Heymenbach held the land, the castle experienced major fires in the late 1700s that led to extensive rebuilding efforts. These reconstructions shaped much of what stands today.

The name Hemmersbach derives from Wigmannus von Heymenbach, a nobleman recorded around 980. Since 2017 the castle has been leased by the French company Châteauform' and used for corporate seminars and conferences, continuing its role as a meeting place.

Burg Hemmersbach is privately owned, so the grounds cannot be visited; the site is used for corporate seminars and conferences. It stands in Horrem, part of Kerpen, roughly 17 km west of Cologne, at about 78 m above sea level. The moated castle is reached from the surrounding village streets, and the former outer bailey and the Motte remnant lie nearby in Horrem.

The castle's name comes from Wigmannus von Heymenbach, a nobleman recorded around 980; over the centuries Heymenbach became Hemmersbach. The first castle he lived in fell into ruin, and a probable successor built around 1100 survives only as a motte in Horrem. The present castle was first mentioned in 1483, after troops of the Maas-Rhine peace alliance destroyed its predecessor in 1366.