This is a paid asset, but now you can download Complete City Pack for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
Complete City Pack v1.0
This Beautiful asset pack comes with a complete model pack of a Modern City scene. All models and scene are optimized for using in different mobile platform. Models are lowpoly and having low draw calls. This pack Contains29 Modern Building
32 Classical building
52 Props
10 Vegetation
1 Custom Made Scene with 4 Seasons variation
4 Skybox
30 Banner
All textures are high resolution. Building Texture are 4K and Other texture are 2k. Android Demo Note : Demo Scene is custom made and included with package. Modular road part is not the package.