The "Tallest Coaster" refers to the highest roller coaster in the world, known as Kingda Ka. Located at Six Flags Great Adventure in New Jersey, it stands at an impressive height of 456 feet (139 meters). This coaster features a vertical drop of 418 feet (127 meters) and reaches speeds of up to 128 miles per hour (206 km/h). Opened in 2005, Kingda Ka is a steel coaster designed by Intamin. It utilizes a hydraulic launch system to propel riders quickly to the top. The ride lasts about 50 seconds, providing an exhilarating experience for thrill-seekers.