Throngs of green-clad revelers have filled the streets of America’s most Irish big city for the South Boston St. Patrick’s Day parade.

Boston’s St. Patrick’s Day has long been known for a boozy good time. BOSTON — Tommy McCarthy’s Irish bar just outside Boston’s city limits pours more Guinness than almost anywhere in the U.S., yet come this St. Patrick's Day, the longtime owner of The Burren is stocking up on plenty of nonalcoholic options too.

South Boston’s St. Patrick’s Day Parade brought revelers in green, confetti-filled streets, and a raucous celebration that spilled from the sidewalks to the T.