Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Medieval Building 07 Free.
Medieval Building 07 v1.1
Highquality 3d model of a Medieval Defense Tower
In conjunction with other medieval buildings you can create a town straight out of the Middle Ages.
Poly Count: 6035 triangles (4568 verts)
– The model is of exterior only and suitable for first person, third person, and orthographic points of view.
– The mesh topology is clean, efficient and has only tri and quad polygons.
– High quality 2048x2048px textures in TGA format (Diffuse, Specular and Normal maps)
– Unitypackage includes the model with materials and textures applied