Kingda Ka , followed by a drop of and spanning over a track by the end of the ride. Plans to build Kingda Ka were announced on September 10, 2003, at an event held for roller coaster enthusiasts and the media. The event revealed the park's goal to build "the tallest and fastest roller coaster on earth", reaching and accelerating up to in 3.5 seconds. On January 13, 2005, Kingda Ka's tower construction was completed, and on May 21, 2005, the ride opened to the public. Kingda Ka became the "tallest" and "fastest" roller coaster in the world, taking both world records
Millennium Force is no minimum age requirement, but guests must be between tall to ride. Persons over a certain weight or waist size are not allowed to ride if the seat and lap bar harness cannot accommodate them. Passengers on Millennium Force may not take loose articles onto the train and are required to wear shirts and footwear. Headphones must be removed before boarding. Guests are advised not to ride Millennium Force if they have recently had surgery, heart trouble, high blood pressure, neck or back trouble, or any medical condition that may be aggravated by riding, or are pregnant. Millennium Force