On the 2nd of August, 1973, three boys smoking in a disused kiosk in Douglas, Isle of Man caused a fire that killed between fifty and fifty-three people and injured eighty others.
The fire tore through the Summerland leisure centre, where no immediate attempt was made to evacuate, and the fire department was not called until twenty minutes after the blaze began. When panic broke out, people trapped inside found that the fire doors were locked.
One wall of the building was left after the rest was demolished in 1975, as there are concerns its removal might cause the collapse of a cliff nearby.
The disaster caused authorities to significantly change building regulations and fire safety procedures.