Château fort d'Écaussinnes-Lalaing is a fortified castle museum in Écaussinnes-d'Enghien, Belgium, managed by the Fondation van der Burch. The structure retains medieval austerity with ground-floor areas including a dungeon, Gothic chapel, historic kitchen, and weapons room, while upper floors reflect 18th-century design. The castle is complemented by a walled kitchen garden perched on a steep cliff overlooking the Seneffe valley, featuring fragrant flowers and panoramic views. Both the castle and garden are designated as exceptional heritage sites in Wallonia. The castle opens April through September and hosts weddings, exhibitions, and special events.