There was a time not so long ago when paintings on any concrete or brick surface—horizontal or vertical—would have been considered as graffiti. As vandalism.

How times have changed. To a reasonable extent, street art is now an accepted form of artistic expression, and some of it is truly amazing. In my opinion, especially the 3D art that has been popping up—pun intended—everywhere.

Some of the art you will see in the following pictures are done by commissioned artists. In some cases, they are simply the work of someone compelled to share their talent with strangers on the street.