This bar, serving over 300 varieties of Belgian beer, attracts tourists and locals alike. It is often packed, so come early or prepare to stand. When you order your beer, it will be brought to you, opened, and poured into its own special glass. Food is served as well. So if you go with a group, order some sandwiches and cheeses and do a little taste-testing.
The bar is closed on Wednesdays, so if you happen to forget and wander around for a beer, just hop into De Hobbit across the street. This is more of a restaurant and doesn't have quite as huge of a selection for beers, but the atmosphere is great.