There’s lots you can do in Belgium over a 3 days journey. From touring the various cities like Brussels and Antwerp to partaking in the numerous well known actions like tasting craft beer and candies, visiting the museums and castles, cycling across the cities, climbing and trekking, and much more. https://www.bastognewarmuseum.be/en/events/75th-anniversary-of-the-battle-of-the-bulge/