Castle Amstenrath, Protected medieval château in Eynatten, Belgium.

Castle Amstenrath is a fortified manor house in the center of Eynatten village, featuring stone walls that blend architectural styles from different periods. The facades and towers clearly show how the building was modified and expanded over the centuries.

Johann von Eynatten built a fortified farmstead on the site in the second half of the 14th century; it was called "Kleines Haus" to distinguish it from the neighbouring Vlattenhaus. In 1508 Servatius von Eynatten replaced it with a new building, and Arnold Huyn von Amstenrath, owner from 1647, remodelled it into its present form. It was listed as a protected monument on 3 June 1987, retroactive to 1 January 1985.

The house was long called "Kleines Haus" to distinguish it from the neighbouring Vlattenhaus, the "Grosses Haus". After Arnold Huyn von Amstenrath acquired the seigneurial rights over Eynatten and Hauset in 1651, the estate became the seat of a lordship and was commonly known as the "Herrenhaus". A Gothic cross dated 1584 stands in the landscape park.

The castle sits directly along the Aachener Straße in Eynatten village center and is easily reached on foot. The surroundings offer plenty of space to explore the exterior and the surrounding village area.

The name Amstenrath comes from Arnold Huyn von Amstenrath, who acquired the estate in 1647, rebuilt it in its present form and gave it his name. In 1651 he also obtained the seigneurial rights over Eynatten and Hauset, making the house the seat of a lordship. A Gothic stone cross dated 1584 stands in the surrounding landscape park.