Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Top-Down Medieval Castle Free.
Top-Down Medieval Castle v1.0
Start building your own medieval kingdom quickly with this great new model set! It includes a range of lovingly crafted modular castle components that can be used to create all sorts of castle big or small castle designs.
Included pieces are:
-2 Castle Towers.
-Vegatation (2 trees,Grass,Foliage).
-Props (Flags,Torch, Shed,Door).