I created this for our personal exploration project for AP Art History. I found the basic model of the Acropolis online (I cannot find the original author) but I have applied some textures, made several changes to the meshes, made the floating island, and composed it. 

I also coded a little explore thingamabob in Unity and published it online, here's a link

https://dotux.itch.io/the-acropolis-3d-model-viewer