Erin go bragh! Dig out your finest Aran sweater and make sure to festoon it with something green for this year's St. Patrick's Day Parade, which will make its way up Fifth Avenue from 44th Street to 79th Street. The oldest and largest St. Patrick's Day parade in the world — the first parade was held in 1762 — is free to watch from anywhere along Fifth Avenue, though it's recommended you show up early to grab a good viewing spot.