3D Rasnov fortress

I need a 3D model of "Rasnov fortress" (native language = "cetatea Rasnov") to be able to print it in 3D. Also some basic textures to be able to use it in other projects.
The model should be as clean as possible and the mesh should be closed shapes (no open planes or inverted geometry) so it can be printed. We don't need very small details. The mesh should contain part of the mountain with forest and the "RASNOV" sign. Trees should be modeled in such way that they can be 3D printed.
A very good reference can be found here: https://sketchfab.com/3d-models/cetatea-rasnov-rasnov-citadel-romania-694c38aab24f44e281297aca1a6c13de.
This model can give you an idea about what I need.
Some improvisation can be done but nothing too extreme.
Other references can easily be found by google-ing the location "Cetatea Rasnov"
Also some videos can be found on Youtube:
https://www.youtube.com/watch?v=K2CdOU5v7T0
https://www.youtube.com/watch?v=5SQlRZrua4E (try to ignore the scaffolds and don't include them in the model)
https://www.youtube.com/watch?v=BVteLn2EdHY
https://www.youtube.com/watch?v=WwoST7aYGSw