The financial exchange eventually joined Euronext, together with the Amsterdam, Lisbon and Paris exchanges, and the best-known index on the Brussels market was the BEL twenty. The building, though, kept going. In September 2023 it opened its doors in a new role, as the home of Belgian Beer World, an immersive journey through Belgian brewing culture spread over 12,000 square meters. If you are mainly here for the architecture, the exterior and the public hall can be enjoyed without buying a museum ticket. Opening arrangements can change, so it is worth checking current details before you plan around them. Before you move on, step back into the square one more time. Try to picture brokers crowding the steps, then the river that once ran beneath this street, then the convent that came before it all. Then see where your curiosity pulls you next, perhaps down toward the medieval layers of the city or up toward the sculpted details of the roofline.