I made this assets in two weeks over the last months.
I made them in Blender in a textured, low poly stile.
I started with the rocks for decoration and the brick texture and then made the bridge.
After that I made the pillars for the bridge.
Then after a break I made the trees. My workflow was to draw the leavs, scan them and then model the tree with the textures for trunk and leavs.
I made the other models in blender with procedural textures and some modelling.
Then my collection was finished.
So I could start making my scene.
With the addition of a modified ground plane and a water textured plane.