Originally Posted by
bzcat
T2 and T5 satellite were all razed and rebuilt with new concourse, similar to what is happening with T3 now.
T4/6/7 satellite are still there in theory but they've been completely gutted to frame at least twice and nothing is left from the original 1960.
I guess the underground tunnels are still there.
The core of T5, where the escalator to the tunnels, the elevator to the tunnels and the Admirals Club, and the stairs to the Admirals Club are located, dates back to 1960 just as the cores of T4, T6 and T7 do.