Back in the student days in the Student Union, there was this magical mechanical wall that we could separate the main big hall from the bar area with. So the wall was down unless there was an event on. Bill Tidy once drew a massive cartoon on this wall, it was much loved by everyone and we were always really careful with it, it had been there a good number of years
After I'd left, one summer, the University decided to paint the inside of the Student Union
You guessed it, they painted over the cartoon the absolute knobs