Brussels/Belgium is full of them. My favorites are the Clockarium, Museum of the Art Deco Ceramic Clock. (https://www.clockarium.org/ https://www.clockarium.or

Brussels/Belgium is full of them. My favorites are the Clockarium, Museum of the Art Deco Ceramic Clock. (https://www.clockarium.org/ https://www.clockarium.org/ Check out the video, its is magnificent.) And The Sewer Museum: Experience an authentic sewer, stroll along the Senne and discover the little-known but ever so important profession of a sewage worker. Descend deep into the bowels of the city for this unique experience! https://sewermuseum.brussels/ https://sewermuseum.brussels/