Guys, I am working on making a forest digital twin! I used Google realistic tile to have the background of the city, then I want to remove specific areas, also the trees because the quality of tiles is not that high. Also, trees gonna work as a phytoremediator in the polluted soil of the area. Do you have any advice? First how to remove Google realistic tiles for the specific area, and any recommendations to have high quality of trees?
Hi @KOUSHA.POLIMI, welcome to the community!
Our website has a tutorial for removing parts of tiles in a polygonal area, which may be helpful for your use case! You can find the link below.
For high quality of trees, I imagine you can find some photorealistic tree models on Fab. For instance, Quixel provides some high quality (and free!) tree models:
Let us know if we can help with anything else. And if you’re willing to share your project with us when it’s finished, we love to see what you’ve built with Cesium! 
dear Janine, firs of all thank you so much for your answer! actually i was thinking to to that exactly! but there is one doubt! because actually its forest digital twin i want ti imitate the shapes of trees and in fab i think it is hard to change the shape of trees. also its a lot of trees and i don’t know how i can put all together not one by one.