Off The Wall

This is actually the painted wall of a building.
Scale: doors at the bottom are real. (click to enlarge)
This huge wave featuring Queen Lili'uokalani is about to crash to the pavement in Honolulu. It took 2 months to plan, and 6 months to execute.

The 'Trompe l'oeil-ist', John Pugh, loves doing 3-D building murals. He's done quite a few, and you can see 6 more here (Daily Mail), including one where he's painted himself and a cow in front of an 'unfinished' mural.