Kasteel van Schoonhoven, Medieval castle in Aarschot, Belgium.

Kasteel van Schoonhoven is a castle in Aarschot built in a U-shaped layout with iron sandstone as its primary material. The main facade features a triangular pediment, while the side wings display curved arches.

The name Schoonhoven appears in records from the mid-13th century. The earliest drawing, from the late 16th century and once in the possession of Charles III de Croÿ, shows a moated castle on a motte, reached by a drive and a drawbridge, probably built around 1500 for Herman van Eynatten. The present U-shaped classicist castle was built around 1770 for Jean-Antoine van der Noot; its forecourt was demolished in 1850.

The name Schoonhoven is recorded from the mid-13th century, well before the present building. The castle reached through the drive and drawbridge of the old moated house is now approached past a symmetrical garden laid out on the motte. A small chapel attached to the castle, dated 1671 by an inscription, holds stucco work by J.C. Hansche.

The castle remains privately owned and opens to visitors only during special events held on the grounds. Parking is available at nearby Recreatieoord Schoonhoven along Diestsesteenweg.

From 1903 to 1908, the castle sheltered Les Clercs de Saint-Viateur, a French religious order fleeing persecution in their home country. This episode reveals how aristocratic estates sometimes became refuges for communities in distress.