The environment was made by Ostap Gordon and can be downloaded for free.
In case you missed it, last year, Technical/Level Artist Ostap Gordon, well-known for creating realistic-looking environments, unveiled a beautiful urban winter scene depicting a Eastern European-style yard and buildings.
Almost a year later, the artist presented a second version of this environment, making it look even more realistic than the original, as well as "more logical, large, high-quality, and detailed". According to the creator, the scene was made using Blender, Megascans, and Unreal Engine 5.1, as well as its Nanite and Lumen features, with the demo video attached above running at around 50-70 FPS at 2K resolution on the RTX 3080 Ti GPU.
And here are some gorgeous renders shared by Ostap: