Summerland disaster
1973 CE.
Shown on the map at 54.167°, -4.457°.
The Summerland disaster occurred when a fire spread through the Summerland leisure centre in Douglas on the Isle of Man on the night of 2 August 1973. Fifty people were killed and 80 seriously injured. The scale of the fire has been compared to those seen during the Blitz.
Text from the Wikipedia article Summerland disaster, licensed CC BY-SA 4.0.