The lovely Ooidonk castle, once the home to the earl of Horne, is one of the finest in the country and is still inhabited by the owner. The castle was numerously involved in conflicts between cities duriing the 14th and 15 century and saw its fair share of religious wars during the 16th century. In 1595 the medieval castle was rebuilt and given its current looks thanks to Maarten della Faille. The outer view, the towers especially, crow-step gables and many chimneys evoke the images of Loire castles such as Chambord.

The castle was brought into the modern age in 1870 without removing the original renaissance style and was opened to the public from 1958 on. The castles interior is filled with precious furniture, silver, paintings and family portraits. The successive owners and the current earl Juan t' Kint de Roodenbeke, have always achieved to maintain the rural panoramic view of the grounds. The gardens are exquisite and worth a visit.