I worked at MSG for 4 years... The Theater is within the arena. The basketball court/ hockey ice is on the fifth floor, and then the seats expand up from that all the way to the top floor which is the sky boxes. The Theater is beneath all that, I believe the stage level is on the first floor and the top row of seats is on the 2nd floor. When you say "floor", you mean seating tier, right? Not like the arena is on it's own floor, like it's an office building and it has stuff above and below it, right? So from what it sounds like, the theater seems to be nestled in behind the first and second levels of seats, where you would normally expect something like a locker room to be? Something like * * * * * <------200 level seats * * <----- 100 level seats theater * theater * theater * court / ice theater *********************************** No, he means like an office building. The floor/ice is not at ground level. MSG is 10 stories tall, the floor is on the 5th floor and the seating is on floors 5-10. I've never been to the theatre portion but from the way he describes it I think the theater is below the arena.