Urbex @ Toledo Hospital 🏨

Have you ever done any urbex in a hospital that's still in use?

This photo was a minor lite urbex and was the result of the information desk giving faulty directions. We were visiting a good friend and ended up in a blind stairwell.

I'm wondering how much really kool fun urbex could be done while looking nonchalant? 

How many really interesting photos could be taken without tipping off security? 

Please, add a link in the comments if you've done this!!