One of the best thing you can do in Bruges is to take a beautiful short walk along the ramparts with its windmills. It is nearby the city center, so after discovering shopping places, beers and coffees, this is a great opportunity to escape from the busy city life for a moment.
Belgium has a rich mill history. If you check a map of Bruges from the 16th century, you can see there were no less than 23 windmills here! They were part of the town walls since the end of 13th century. Nowadays, there are four remaining mills between the Dampoort and the Kruispoort: Koeleweimill, Nieuwe Papegaai, Sint-Janshuismill and Bonne Chiere.
https://www.visitbruges.be/en/windmills-of-bruges