Mélusine, sympathy and hugs! I hatehate hate when fools do stuff like that. I remember the photographs, it looked like such a magical and romantic place. I have been doing urbex since long before there was a word for it, and the whole point is to explore without disturbing, to pass through the spaces like a shadow and leave no trace, to look and not mess with things, as if you were visiting the time they come from. The most I've ever done is pick fruit from abandoned gardens, and rescue a violin from under the floorboards of a house that was being demolished.
I think I'm angry too.