Kasteel Ter Dolen, Protected castle and brewery in Houthalen-Helchteren, Belgium.

Kasteel Ter Dolen is a castle with a functioning brewery in Houthalen-Helchteren, featuring stone walls arranged around a central courtyard. The grounds contain multiple buildings that blend older architectural styles with more recent brewery operations and facilities.

Kasteel Ter Dolen is first mentioned in 1282 as a summer residence of the abbots of Sint-Truiden Abbey. In 1522, under abbot Willem van Brussel, it was rebuilt as a fortified manor with a stable, dovecote, ring wall, towers and a deep moat. Abbot Remigius Mottaer transformed it into a U-shaped classical country house in the 18th century; it was confiscated under French rule and sold in 1797. Since 1994 the Kasteelbrouwerij De Dool has occupied the farm.

The brewery creates beers using traditional Belgian methods, producing light lagers, darker varieties, and fruit-based versions. These drinks reflect the abbey roots of the place and draw people together to taste and learn about local brewing.

The site is open on weekends for tours and tastings, with guided visits available at regular times. No special knowledge is needed to enjoy a visit, though the tasting experience centers on beer products.

The castle's farm building has housed Kasteelbrouwerij De Dool since 1994, founded after a brewer's daughter bought the decaying complex in 1990 and began restoring it. The brewery occupies the former farmyard rather than the castle itself.