But Nemo does exist, it's just not actually very intersting since it's notable only in this abstract sense. Similarly when the Americans build a base at the geographic South Pole (Amundsen-Scott base) the Russians built one at the pole of inaccessibility - the place furthest from the sea, which is not interesting in the same way as the actual South Pole, but still a desolate horrible place to be, grossly unsuited to human habitation. Unlike Amundsen-Scott, I believe that Russian base is no longer permanently inhabited 'cos it turns out that's very expensive and the Russians don't have the same budget for such things.