Bruges is a historic medieval city (UNESCO World Heritage)with many sights and things to do (more info https://www.visitbruges.be/). The polders are great for hiking or cycling. See attached web sites for cycling routes or walking routes.
http://www.fietsroute.org/cycling/belgium
http://www.wandelroutes.org/indexuk.htm

You can also visit the sea (15 minutes drive), various parks, forests,...
There are al lot of cities in Belgium that are interested to vistit (Gent (40 m), Antwerpen (1h 15 m), Brussels (1 h), Lille (1 h 30 m) .