IV - Buildings you can go in.

[Adam$]

What buildings can you go in on GTA IV?

[Misawa]

Safehouses, some banks, some apartment blocks, some skyscrapers, restaraunts, bars, stores... it's too hard to pick them up specifically.

[GhostFace-]

all places on your map and some random places.

just walk into the doors and see if they open

[Pazza]

Yeh, if the doors look real, go in.

And it's handy to go into alleyways and go up apartment blocks to get away from cops =]