What is max height of a building?

[gsxdsm]

For a mod...how large (height) can we make a building?

 

[redjericho3]

I doubt there is one, though it will start to look stupid if it is too large.

 

[Hapydude101]

If there isn't I totally want to mod the Citadel from Half Life 2.

 

[BStyles]

I'm interested in that Space Elevator I saw, in the editor menu. That would really add something cool to the city.