Where can I find this wallpaper?

Couldn't find that exact picture after a quick google search, but did find the same walkway/lighthouse in a slightly different photo.

 

This is the largest I could find…



…which I expanded to this:

 

I was able to find one a little larger. I increased the size to 1920x1080 and I also altered one to match the brightness and contrast more to the one in the photo you attached. Enjoy!