This is a paid asset, but now you can download Colonial Free.
Detail this asset from Unity Store: Original Link
Colonial
Build historical municipal squares or construct the ultimate Neo-Classical fantasy city. These grand structures borrow from the traditions of Palladian and Regency architecture with their use of beautiful pediments, archways, pillars, Venetian windows, copper plating, and lofty and complex towers. With a variety of stone, brick, plaster, and wood textures to choose from, you can give your world a Roman, Federal, or even otherworldly flair.
Designed by Sebastian Luca, modeled by Austin Hernandez, and texturing by Alexey HrDesign, with cover art by Oliver Beck.
Please note: Colonial Proceed with creativity! You are about to purchase a 3D asset kit that includes elements to set the scene as you build your world, whether it’s for video games, film, television, design, or art. These completely customizable assets will serve as the building blocks to help you create an original environment with Unreal, Unity, Houdini, Blender, Maya, Cinema 4D, and 3ds Max native file support. With a license you can download this kit in multiple file formats, all you need to do is create a free account. Inside this kit you will find:
Models 60
Materials 24
PBR Textures 280
Poly Count 1.9m
Uvs Yes, Non-overlapping