What are the origins of Guy Fawkes Day?

Guy Fawkes Day marks the downfall of the Gunpowder Plot of 5 November 1605, in which a number of Catholic conspirators, including Guy Fawkes, attempted to blow up the Houses of Parliament, in London. Parliament later established November 5 as a national day of thanksgiving. Fireworks traditionally fill the skies over Britain in remembrance of the failure of the Gunpowder Plot.

The rhyme "remember, remember the 5th of November" refers to Guy Fawkes Day, celebrated in England. The full rhyme is:

Remember, Remember the 5th of November,

Gunpowder, Treason and Plot,

I see no reason why Gunpowder, Treason,

Should ever be forgot.