This is fantastic! I have no idea where it’s located or who took the picture. (Do you know?)
Looks like it was taken in a parking garage, perhaps. It’s a mural of books on cement stairs!
UPDATE: Thank you Judy for discovering the origin of the photo: It’s from the blog A Life in Focus. The mural was created by the Greenville Literacy Assn. in Greenville, South Carolina. And it is indeed in a parking garage. (Yay for Google Image Search.)