Stevie Wonder seemed to enjoy a house of horror tour Sunday in Las Vegas. The music legend spent more than two hours at Fright Dome, a “haunted” park themed after the “Saw” and “My Bloody Valentine” movies with roaming, “ghoulish and gore-clad” actors, strobes, lasers and eerie sound effects. A spy told us, “Stevie got a private tour and talked to everyone, even stopping to run his hands over their gory facial prosthetics. He was scared at some parts, but was smiling most of the time. He even rode the roller coaster.”