Place folder in Documents\Trackmania2020\Items
Just inspired by The Sims 2 CC creators, it has neighorhood decoration with skylines and horizons, so I decided to make Vista warp background, from empty bases to the beautiful horizon.
Texture Mod List
Can be used to change different horizon textures, you can download on ManiaPark.
Also, straighten UV version only, not compatible with the base one.
Update 1.0.0 ~ First Release
Also...
I’d recommend to use ghost mode for the better placement