Corkscrew is a steel roller coaster located at Cedar Point in Sandusky, Ohio, United States. Built by Arrow Development and designed by Ron Toomer, it opened to the public on May 15, 1976. The coaster features Arrow's first vertical loop and was built during the same time period as The New Revolution at Magic Mountain. Revolution, which opened seven days prior, is credited as the first modern-day coaster to feature a vertical loop, while Corkscrew is credited as the first roller coaster in the world with three inversions.