Boston is ground zero for St. Patrick’s Day parties. The holiday was first celebrated here back in 1737-the first time it was observed in the New World. Nearly a fifth of the city’s population claims some Irish ancestry, and the crowds of travellers coming specifically for the week-long celebration bring the total number of revelers to more than 800,000. The parade takes place on the Sunday closest to the 17th and follows a route through South Boston. While you’re in town, check out the Irish Heritage Trail, and head to any Irish bar-there are plenty to choose from!-for live music and dancing. If you can, catch a show by Boston’s own Celtic punk band, the Dropkick Murphys.