Get in touch with your spiritual side and mingle with worshippers at Collegiale Saint-Denis. Explore outside for a while or ask if you're allowed to join the next service.
This house of prayer is on the to-do lists of many visitors to Liege. But Collegiale Saint-Denis isn't the area's only highlight. Liege Cathedral, Royal Opera of Wallonia, and Place Saint-Lambert are some other worthwhile sights nearby.