By an extremely large margin vote, here you go.
Sunset Valley Adventures
A collection of landscapes from Sunset Valley! Total natural wonders of the surrounding area. Because it became such a popularly voted item, I added in like eight more images than originally intended.
They’re very big, FYI. xD
Worth 500 simoleons and located in Decor -> Wall Art.
TOU: None that I can think of. :)