The Gravensteen or the "Castle of the Counts", Ghent, East Flanders in Belgium

No army has ever managed to conquer the medieval castle of Gravensteen with its deterrent moat, thick walls and watchtowers but from a group of students who marched in on November 16, 1949. The only guard on duty was locked up by the students who then barricaded the door with a large cart full of fruits. Banners were hung from its towers: the beer price had to be lowered back to 3 Franks as it had just gone up to 4 Franks a glass. Nothing much happened for the first hours until two police officers biked by and got hit with some ripe fruits. More cops and firefighters were sent to the scene and suffered the same fate in a rain of ripe fruits! The occupation only lasted for a few hours, until the firefighters put a ladder up and sneaked into the castle. The occupants were arrested. Each year, students from Ghent commemorate this day by marching into the castle and drinking a lot of beer while dancing on its walls!