The Empire State Building in GTA III is extremely ugly, does not look anything like its real or HD Universe counterparts. Also, it has an incomplete collision and a terrible LOD model.
I decided to improve it without changing the game original atmosphere. Almost all the textures are from the original model. In addition, I've put time controlled objects for night lights on the windows and decorative lights on the highest floors and antenna.
Modloader and Limit Adjuster required.
Just replace the .txd file.