- Who
- Universe I Part II
- What
- 139 centimetre(s)
- Where
- ()
- When
The largest firework ever produced was Universe I Part II, exploded for the Lake Toya Festival, Hokkaido, Japan on July 15, 1988. The 700kg 1543lb shell was 139cm 543/4in in diameter and burst to a diameter of 1.2km 3/4mile.
