After 10 years experience in the field of exploring abandoned buildings I thought I had seen it all.
On the second floor at the end of each corridor there is a door. Behind this door lies a large room with several toilets. I had gone inside and opened a window to look outside when I heard a loud bang just behind me : the draft had slammed the door ... and it had no handle ... and it was a solid door and despite all my efforts it didn't move at all. 2 floors high. Sure I could start yelling out of the window and try to get someones attention, but that would end in the firebrigade smashing the door for me ... not exactly something to be proud of. Luckily there were some more toilet doors with the same handles. So I started wrenching the handles, but without tools I couldn't get the rusty pin out. Fortunately one of the last handles broke off after a Bruce Lee type maneuver. I simply opened the slammed door and walked FREE !
This door handle travels with me from now on.