There is many fireworks all around the world. Its very beautiful and magnificent but its very loud and it makes a lots of trash. And, I researched about fireworks. The largest firework show is Dubai's 2019 celebration firework. It was happened on the world's most tallest building, Bruise Califa. It made broke the Guiness record because the length of firework is 13 kilometers. Its very huge. I cant imagine watching 13 killometers of firework. It will be kind of beautiful, but some kind of chaos, and very loud. So I think the world's most biggest firework is the world's most loudest firework. My ear!