"Remember remember the 5th of November

The Gunpowder treason and plot

I see of no reason why the gunpowder treason

Should ever be forgot"

"Catholic dissident Guy Fawkes and 12 co-conspirators spent months planning to blow up King James I of England during the opening of Parliament on November 5, 1605. But their assassination attempt was foiled the night before when Fawkes was discovered lurking in a cellar below the House of Lords next to 36 barrels of gunpowder. Londoners immediately began lighting bonfires in celebration that the plot had failed, and a few months later Parliament declared November 5 a public day of thanksgiving. Guy Fawkes Day, also known as Bonfire Night, has been around in one form or another ever since. Though originally anti-Catholic in tone, in recent times it has served mainly as an excuse to watch fireworks, make bonfires, drink mulled wine and burn Guy Fawkes effigies (along with the effigies of current politicians and celebrities)."

From history.com

Why do bonfires still burn 400 years on?