Luoyang Christmas fire
2000 CE.
Shown on the map at 34.684°, 112.474°.
The Luoyang Christmas fire was a fire that occurred in Luoyang, in China's Henan Province, on 25 December 2000, killing 309 people. The fire was started by welding that sparked flammable materials; while the construction and retail workers in the same building evacuated, the nightclub patrons were forgotten about and were overwhelmed in a flashover. This was one of the deadliest fires in China and the second deadliest nightclub fire in history.
Text from the Wikipedia article Luoyang Christmas fire, licensed CC BY-SA 4.0.