It resides next to the tower, usefully blocking the view of arrivals on runway 07, although it was moved back last year at Safeskys request. It was used for filming in early February this year, but not having been inside it I don't know if it still has passenger seats. It is kept hooked up to a power supply for air conditioning.
The wings have been 'modded' so the engines appear to be in two double pods, not four single ones as the original. Consensus seems to be this was at the request of Boeing so it didn't look exactly like a 747.
Not sure who actually claims ownership but as Aces High occupy part of the ground floor of the tower, so your guess is as good as mine.