Guy Fawkes and other Catholic conspirators hatched a plan to blow up the English Parliament in 1605 due to religious persecution by King James I. They rented a house near Parliament and began tunneling, but were delayed by flooding. On November 5th, 36 barrels of gunpowder were hidden in the cellar, but Guy Fawkes was captured while guarding the explosives after an anonymous warning letter. The other plotters were killed or captured and all were tried and executed for high treason in 1606.