Hollogne Castle lies in a wooded area, in the fertile Geer valley, in the center of the village of Hollogne-sur-Geer, south of the town of Waremme, in the province of Liège in the Wallonia region in Belgium.
I haven't been able to find any info at all about this castle. Other than that is was destroyed during the war between the Awans and Waroux families which ravaged the area between 1298 and 1335. So if you now more, please tell me.
What remains of the castle today is a round corner tower, a rectangular building which probably served as stables and a free standing wall of another building. At least, that was what I could discover as the castle terrain is very much grown over; in some places the nettles were standing up to shoulder height!
The foundations of the tower could be medieval. I couldn't see the foundations of the other structures. The tower and other structures themselves are not medieval, they were probably built somewhere between the 17th and 19th century.
The entire castle terrain is moated. Only the moat at the north east side is still relatively large, the rest has silted up and is nothing more than a ditch. In older times it was probably fed by the nearby Geer stream.
The castle terrain is fenced off and thus the castle can't be visited.