Kasteel Coloma

The site occupies a water château layout, set within an expanse of ponds fed by the Zuenbeek stream. The plan preserves the character of a moated complex, with water shaping approaches and vistas. The main house sits on a raised terrace above these ponds, reflecting its transformation from a compact defensive circuit into a balanced residential ensemble surrounded by water.

The earliest fabric dates to the first half of the 16th century, when a square fortress of two adjoining ranges with stepped gables was erected. Corner towers flanked the original plan and the building ringed by water gave it defensive depth. Much of that early massing survives in the lower walls and in the arrangement of the courtyards, showing how a fortified domicile was adapted rather than wholly replaced over time.

An extensive remodelling in the 18th century reworked the old citadel into a classically influenced country residence. The principal block is a long rectangle beneath a single hip roof, and the stepped gables were lowered during this phase to create a calmer roofline. The result is a symmetrical façade and a more representational dwelling suited to eighteenth-century landed taste.

Four corner towers remain as a distinguishing element; two square towers on the western side were later additions and are topped with bulbous, onion-shaped roofs. Access crosses a stone bridge, described in different accounts as a three-arched span or as a causeway of four low stone arches with balustrades leading to the principal entrance. The entrance portal itself is carved from sandstone and set upon pilasters, finished with a triangular pediment.

Windows and masonry show mixed survivals and later repairs. Mullions (vertical stone bars dividing window openings) survive in the eastern tower, while many other openings lost their original stone divisions and were altered to sit beneath flat lintels. Construction uses red brick with stone reserved for window surrounds, stringcourses (horizontal stone bands between floors) and rusticated corner quoins (dressed corner stones with rough-faced blocks), giving a patterned contrast between wall and trim.

Several ancillary buildings and garden structures remain. Part of a 1731 remise, or coach house, stands in a Renaissance manner with an arcade supported on Doric columns and round-arched, mullioned windows; this building now accommodates hospitality functions. Former stables were converted to serve the rosarium, and a late-18th-century pavilion sits between stepped gables, accompanied by a round tower capped with a conical roof. An isolated square tower, reminiscent of an earlier keep, now contains a small rose museum.

The ponds and water features visible today match those shown in historic illustrations and are treated as preserved in their traditional configuration. Two former gatehouses and the original stables were removed over the centuries, leaving only a portion of the 1731 coach house, but the surviving structures and landscape features present a clear sequence from fortified seat to landscaped country estate.