Guy Fawkes and several other Catholic men hatched a plot to blow up the English Parliament in 1605, as retaliation for the harsh treatment of Catholics. They rented a house next to Parliament and dug a tunnel to store gunpowder in the cellar. However, one of the conspirators had a change of heart and sent an anonymous warning letter. On the day of the planned attack, Guy Fawkes was found guarding the gunpowder and arrested. He and the other survivors of the failed "Gunpowder Plot" were executed. To this day, Britons commemorate the foiled assassination attempt by burning effigies of Guy Fawkes on bonfires.