Naked in the abandoned hospital 18+

You like to explore abandoned locations. Its interesting to see places long after people left them to decay and be reclaimed by the elements. But most importantly, these places are isolated and perfect for some public nudity without any risk. So you take off all your clothes and leave them outside and walk into the abandoned hospital to do some nude exploring with nothing but a flashlight. Your confident as you enter, certain your alone, but are you?