I have been playing this game since it came out years ago and Space age was promised to be released soon, soon has been years now... Hopefully the long wait will not be for nothing.
Normally an Air Traffic Control tower has a rotating beacon which guides aircraft to the airport during night and reduced visibility operations, I say take the RADAR (which should really be rotating) off the top of the tower and make a new building for it which could be a RADAR site to track...