Carnival tragedy of 1823
1823 CE.
Shown on the map at 35.896°, 14.513°.
On 11 February 1823, around 110 boys were killed in a human crush at the Convent of the Minori Osservanti in Valletta, Malta. The boys, who had gone to the convent to receive bread on the last day of carnival celebrations, were crushed after falling down a flight of stairs while trying to exit the convent.
Text from the Wikipedia article Carnival tragedy of 1823, licensed CC BY-SA 4.0.