3D CITY MODELS???????

i need some 3d models for certain cities for my game. but the only ones i could find were here:
http://3dcadbrowser.net/preview.aspx?modelcode=15146
it costs money to download it so can anybody tell me where i could get something like this 4 free or tell me how to make one?
thx

Here is a blog post that lists at least 60 places to get some free 3D models:

Free 3D models

If you are looking to model some yourself though, you are going to need a 3d modeling program. I would recommend Blender (blender.org) as a good starting point because it is free and has a lot of support within the Unity community.

If you want to get more advanced, you could also check out professional programs such as 3ds Max or Maya, but those can cost a few thousand dollars a piece, but are 100% free in you are a student (students.autodesk.com).

Hope this helps, and do not hesitate to ask if you want some more information on any of these!

Sketchup Pro is $495 and can export in different formats.

https://support.google.com/sketchup/bin/answer.py?hl=en&answer=36203

If that is too pricey you could consider using blender to make some basic cubes to fill things in, importing them into Unity. Just depends on how detailed you’d like to be.

you can try tf3dm

go to the sketchup you will find some free building files that you can download there only
@Gurleen_Singh