Yea, in TC streets of NY nearly every building was enterable, and this came out like 7 years ago on PS2
Rockstar really dropped the ball not making the Airport Terminal enterable, so many opts for easter eggs on the Departure boards and such, I was bummed they didn't make Grand Easton Terminal enterble in GTA 4
In the preview ads GET was enterble but for some reason Rockstar threw the interior in the bushes.
I mean Vice City and San Andréas had malls and fast food restaurants that was enterable, why not in this game?