3d-tiles Location error

Good morning Community,

I ask you for help: the “Textured Model (3d tiles)” , when loaded on Cesium, does not seem to be correctly georeferenced.

In fact, instead of Pisa it is located in Milan.

Can anyone tell me which is the step that I do not perform correctly?

The task
The Images



The textured model isn’t geo referenced at all, only the point cloud.

Thanks Andreas,
so i need help to find the way to add geo reference infos to the textured model.
Any ideas?