All of these are animated wallpapers that really bring your desktop to life, with both 2D and 3D animations at play.
Right click on the image and select 'Save image as...' Select the folder you want to save the photo in. Locate the photo within the folder, right click on the photo, and select 'Set as desktop ...
But that was because I just assumed it was some kind of boring 3D render, when the actual truth is way more interesting. It turns out Windows 10's default wallpaper is a photograph of an actual ...