The result is truly beautiful

Excuse me for going a little off-topic, what tools did you use to place the meshes in their corresponding places in the city and to apply the textures to the surface?
I would also like to make my own town and add our beloved lighthouse.
Orbiter Base Maker. It is made for Orbiter 2010, not 2016, so not everything work as intended when you use it, but to place buildings and meshes, it is pretty good at that.
What I do is place some of your L15 tiles as "Level 3" in OBM first so I have a reference to place objects. If you don't, you can try L14 with Level 2, or L13 with Level 1.
Then "Edit Object" and you can place your mesh where you want.
Once its done, import the base in Orbiter 2016. To avoid issues, I would suggest to then open the config file of the base and remove these lines:
BEGIN_SURFTILELIST
[some data]
END_SURFTILELIST
These lines aren't used in Orbiter 2016 and cause issues in DX7 (as far as I am aware) since it force 2016 to try to load tiles the way 2010 did it.
And this is how I place objects on my bases. That the method I used for my
Saba and
Area 51 addons.
If you or anyone else have more questions, don't hesitate to send me a private message. After all, this is the thread to share screenshots of Orbiter, not on how to make bases.
