Sadly the mass loss of young life in the night club in Crans Montana is not the first such tragedy, with PBS collecting some past examples: https://www.pbs.org/newshour/world/a-look-at-some-of-the-worst-fires-in-bars-nightclubs-and-music-venues There was also this one in Rouen, France: https://fr.wikipedia.org/wiki/Incendie_du_Cuba_Libre. The similarities are striking – combustible sound insulation, limited or hard to find exits, pyrotechnics, crowding and a lack of sprinklers.

Meanwhile a fire last winter in a hotel in Kartalkaya, Turkey https://en.wikipedia.org/wiki/2025_Kartalkaya_hotel_fire  has already led to 11 people being imprisoned. Perhaps exemplary prison sentences would get the attention of those who let people enter such dangerous premises. Yet memories are short and well-intentioned fire safety guidance is still unlikely to be read, while budget limitations will mean premises are not thoroughly checked. We need redundancy in fire safety and in nightclubs that must include sprinklers. NIST showed after the 2003 Station nightclub fire what a difference sprinklers could have made: