National Lampoon’s Vacation After breaking in to Wally World and forcing the security guard (John Candy) to go on rides all over the park, Clark Griswold (Chevy Chase) and his family are held at gunpoint by the Swat team just outside the Whipper Snapper ride entrance. The entry way was the old entrance to Revolution, a rollercoaster at Six Flags Magic Mountain in Valencia, CA. The Revolution is the world’s first modern roller coaster to feature a vertical loop, opening in 1976 and still operational today. It’s now known as “The New Revolution – Classic” Six Flags Magic Mountain 26101 Magic Mountain Pkwy, Valencia, CA