The Alimentarium is more interesting than "a museum of food run by a multinational" sounds. The permanent exhibits are organised around four themes — eating, buying, cooking, digesting — with plenty of hands-on stations that work well for adults as well as children. The kitchen, where you can sign up for short cooking workshops, faces directly onto the lake.
The building's lakeside terrace and the famous giant fork sculpture planted in the water just offshore are free to visit even without a museum ticket. Allow two hours for the full visit, more if you book a workshop.