You are looking at the biggest firework ever fired, weighing a total of 1,014 pounds (460 kilograms)—a new world record. According to NHK, it exploded over the city of Konosu—in the island of Honshu, Japan—into a breathtaking rosette about 2,624 feet (800 meters) in diameter.
The fireworks shell measured four feet (120 centimeters) in diameter and was fired with a cannon. Go to the minute 3:11 for the money shot, although I recommend watching the entire thing at full screen in full HD. It has some really beautiful moments.