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is a short roller coaster-like ride in Las Vegas, but don't let the length fool you. Sitting in a little car that resembles a futuristic jet ski, riders on the X-Scream are propelled forward and backward … while hanging off the edge of Stratosphere Tower, almost 900 feet in the air. Sure, the view of the Strip would be pretty magical from up there, but that extreme height is unsettling. Imagine sitting in the front seat! It would feel like you're leaping off the building headfirst. Despite how shocking it looks, X-Scream continues to be a popular way for visitors to sight-see and thrill-seek at the same time. You can kill two birds with one stone, just as long as you don't try to fly.