Kingda Ka is currently the world’s tallest roller coaster. It’s also the world’s second fastest roller coaster as well. Kingda Ka is one of the rides at Six Flags Great Adventure, located in Jackson, New Jersey. The ride was opened in 2005. At that time it was both the world’s tallest roller AND the world’s fastest roller coaster as well. World’s fastest roller record now goes to a roller coaster called Formula Rossa which is located at the Ferrari World theme park in Abu Dhabi, United Arab Emirates. So in essence, it still holds the title for tallest and fastest in North America, just not the world anymore. For now, we’re just looking at the tallest in the world. The fastest in the world will come in a future post. Stay tuned!