This plaza is at 555 Market Street, San Francisco. It's outside a couple of skyscrapers that started out as headquarters for oil companies, and now rent out to all kinds of companies.
Stare at the center line and then sweep your eyes side to side. You may notice the paving looks like it's starting to fold up like the bellows of an accordion, or like a folding screen.
In reality it's perfectly flat. All the black pieces are the same size and shape, and so are all the white pieces. You can stand at the end of any row and see the same illusion.
The only reference to a similar visual illusion I could find is the "Missing Corner Cube." It is supposed to have three possible interpretations, but I could see only two.