Colonster Castle

Colonster Castle stands on a rocky spur above the Ourthe valley, close to Liège, in the Belgian region of Wallonia. Although today it is best known for its ties to academic life, its story stretches back to the Middle Ages, and its current appearance is the result of a major transformation carried out several centuries ago.

Where is Colonster Castle located?

Colonster Castle sits in Wallonia, in the immediate vicinity of Liège, one of the larger cities in southern Belgium. Its position on a rocky spur overlooking the Ourthe valley has for centuries made the site a naturally defensible location, which explains why a fortified structure was originally built here rather than a purely ceremonial residence.

What is the history behind the castle?

The earliest records of Colonster Castle date back to the 14th century. At that time, the site functioned as a typical medieval stronghold, positioned to defend a strategic point above the river valley. The appearance the castle presents today, however, is considerably later: it stems from an 18th-century rebuild commissioned by Maximilien-Henri de Horion. This renovation fundamentally changed the character of the building, turning Colonster Castle from a defensive fortress into a pleasure palace intended for leisure and entertaining guests rather than for military defense.

Who designed the interiors?

The interior decoration from this period is attributed to Paul-Joseph Delcloche, whose work gave the rooms the refined character typical of 18th-century palace design. It is this era of rebuilding and decoration that shaped the castle's present-day identity — a structure that combines its earlier defensive origins with a later, far more elegant character.

What is the castle used for today?

A significant turning point in the history of Colonster Castle came in 1963, when the castle and its surrounding park were acquired by the University of Liège. Since then, the property has remained closely linked to the university. Today the building serves as a reception venue, offered for hire to host corporate events. In this way, the former stronghold turned pleasure palace has found a new purpose as a setting for business gatherings and events organized in connection with the university.

Is there a park around the castle?

Yes — Colonster Castle is surrounded by a park that, like the castle itself, passed into the hands of the University of Liège in 1963. The park forms an integral part of the estate and, together with the castle, makes up a property managed by the university.

Frequently asked questions

Where exactly is Colonster Castle located? The castle stands on a rocky spur in the Ourthe valley, near Liège, in the Wallonia region of Belgium.

When was the castle built? It was first recorded in the 14th century, though its present palatial appearance dates from an 18th-century rebuild.

Who transformed the castle into a palace? The rebuilding was carried out by Maximilien-Henri de Horion, with interiors decorated by Paul-Joseph Delcloche.

Who owns the castle today? Since 1963, the castle and its park have belonged to the University of Liège.

What is the building used for now? It offers reception areas that are hired out for corporate events.