If you're interested in this kind of stuff, I highly recommend you check out the work by Itso & Adams. Recently, a room was discovered at the Central Station in

If you're interested in this kind of stuff, I highly recommend you check out the work by Itso & Adams. Recently, a room was discovered at the Central Station in Copenhagen, which, though thought to be shut down, had been occupied for years. Itso & Adams have done stuff like this all over europe. There's a book in the library of stockholm in which a key and a map is embedded, which leads to a bunch of their hiding places and passage ways. No one knows which book though, and if you find, you're supposed to check out the spots and put the book with the key back. It's very inspiring. Couldn't really find an article with a good overview in english but heres a video with subtitles and an interview: https://www.youtube.com/watch?v=xr3GV2ZLHDI https://www.youtube.com/watch?v=xr3GV2ZLHDI http://www.megawordsmagazine.com/interviewDetail.php?interviewID=27 http://www.megawordsmagazine.com/interviewDetail.php?intervi...