What is this strange hobby/interest known as ? (if anything )?

Question

okay this is a weird one but if someone has an interest or fascination in exploring places they should not be , is there a name for it?

what i mean is old derleict buildings , unused subways , uk sewers , old psychiatric hospitals , cellars , old churches , catacombs , caverns etc etc , the list goes on but i mean places where you have no right to be lol , is there a name for this weird hobby and is there any like legal type clubs where it can all be done

Answer 1

Explorer? I guess.

Answer 2

Not sure, but if it floats ur boat then go for it why not!.

Answer 3

sounds like a cool computer game lol