This is a paid asset, but now you can download Cube Style Town Free.
Detail this asset from Unity Store: Original Link
Cube Style Town v2.2
“If possible, please buy the package to support the developer”
This package contains 52 items of buildings, roads, and others.Each model is made with the toy or Lego-style. You can see examples on the Sketchfab. The textures are made special for Standard Metallic Shader and contain AlbedoTransparency, MetallicSmoothness and Normal maps (2048×2048).