Looking at the Empire State Building from a certain angle can make a Zeppelin appear, which will then either continue to fly or land on the ground. In the latter case, just before the landing the player will be linked. If it continues to fly there will be no linking opportunies.
It's textures never change.
On the tail end, a flag of the LSD splash screen can be seen.
This object could always be there but it only shows up at certain angles because of a game glitch, it could also be a representation of the Hindenburg blimp that exploded giving a reason to why it links to black space.