This mural is painted on a building in downtown Fort Worth's Sundance Square entertainment district.
Got this photo (click on it to see it full size so you can appreciate it's grandeur) of it after eating lunch at the Cajun restaurant Razzoo's.
Here's a paragraph about the mural from Michael Schuman
"The impressive and then a link for info on this really cool painting:trompe l'oeil ("fool the eye") mural, painted by Richard Haas, covers an outside wall of the Jett Building in Sundance Square downtown. It depicts two cowboys on horseback watching over a cattle roundup and it appears that the longhorns are charging right off the building."