(on the following page, make sure to check out not only the top link (AFTER), but also the before-1974 link.)

somewhere around japan…

well, ok, it’s actually here, just outside Nagasaki:
http://en.wikipedia.org/wiki/Gunkanjima

featuring, among other amenities, the Stairway To Hell:

Stairway To Hell

move over, Sealand.