Every year on March 17, the Irish and the Irish-at-heart across the globe observe St. Patrick’s Day. What began as a religious feast day for the patron saint of Ireland has become an international festival celebrating Irish culture with parades, dancing, special foods and a whole lot of green.

Bet You Didn’t Know: St. Patrick’s Day  (3 min) TV-G

Get the real story about this beloved Irish holiday and the patron saint it’s named after.