Six Flags Great Adventure is an amusement park located approximately 20 miles southeast of Trenton in Jackson, New Jersey. Owned and operated by Six Flags, the park complex is situated between New York City and Philadelphia and includes a water park named Hurricane Harbor.

As of early 2026, the title of the tallest roller coaster in the United States belongs to Kingda Ka at Six Flags Great Adventure in Jackson, New Jersey. This "stratacoaster" stands at a staggering 456 feet (139 meters) tall. It uses a hydraulic launch system to propel riders from 0 to 128 mph in just 3.5 seconds before they ascend a 90-degree vertical tower. However, the coaster landscape is changing rapidly; the much-anticipated Falcon’s Flight at Six Flags Qiddiya (internationally) is set to shatter world records, and in the US, various "giga" and "strata" projects are often in development. It is also important to note that Top Thrill 2 at Cedar Point, while slightly shorter than Kingda Ka, offers a different experience with its triple-launch system. For those seeking the absolute peak of American coaster height in 2026, New Jersey remains the destination. Always check for seasonal maintenance schedules, as these extreme machines often close for high winds or technical inspections.