Kulminator is an excellent specialist bar, a pioneer in beer aging. Tucked away in a obscure street in the city centre, it's easily worth the effort of tracking it down.
It's a long thin pub, with unspectacular, but cosy décor. On the way to the toilet you can see through a window into the temperature-controlled room where beers are ageing. I won't bore you with a long description, because the physical environment is almost irrelevant here. What's important is the beer.
The beer selection is outstanding. Just the new beers would make it an excellent beer pub. What tips it over into the wonderful, is an unrivalled choice of old beers. Every vintage of Chimay Blue stretching back 10 years or more. Eldridge Pope Hardy Ale and Gales Prize Old Ale at drinking age (10 years old). Forgotten beers from long-closed breweries, beers never offically sold (I've had Westvleteren Green, the beer for the monastery's internal use, here once), anything you could dream about and more. It would take several weeks to exhaust the possibilities.
World fame has not been kind to Kulminator's stocks of vintage beer. (Luckily, the unpoularity of this page leaves me blameless. Phew!) They didn't expect demand to be so big, when they started cellaring. Mass beer tourism must have come as a bit of a shock.