Millennium Force is a steel roller coaster built by Intamin at Cedar Point amusement park in Sandusky, Ohio, United States. It was the fourteenth roller coaster to be built at the park since Blue Streak opened in 1964. Upon completion in 2000, Millennium Force broke six world records and was the world's first Giga Coaster, a roller coaster that exceeds 300 feet in height and completes a full circuit.