Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Virtual Art Space Volume 1 Free.
Virtual Art Space Volume 1 v1.0
Virtual art space Volume 1 is a beautiful designed pack of highly optimized gallery building models,all using only 2788 tris. 14 texture atlases including and lightingmap. 43 works of art can be displayed。with this pack you can own your 3D virtual Galleries for displaying your art On the internet or mobile.
It comes with:
-1 gallery buildings.
-1 spotlight prefab.
-43 work of art