Detail this asset from Unity Asset Store: Original Link
This is a paid asset, but now you can download CiDy 2 Free.
CiDy 2 is a Unity Integrated City Designer.
This editable city designer works right within Unity’s own Scene View, there is no additional Applications needed for CiDy 2
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CiDy creates editable procedural roads, intersections and sidewalks. Handles lot division in city blocks. Building placement on lots. Street light placement and clutter objects placement. ie(benches/trash cans)
Tired of Flat Procedural Cities?
CiDy is Integrated with Unity Terrain and can blend your CiDy to unity terrains.
WARNING: Currently Version 2 only works with single terrain and cannot handle a multi terrain setup. This is being updated with the new Unity Terrain System.
OTHER COMPATIBLE ASSETS: Vegetation Pro: CiDy 2 will automatically create Vegetation Masks culling the grass/trees away when generating procedural elements.