Where are the biggest St Patrick's Day parades in America?

New York City's is the oldest and the largest: the first parade marched on 17 March 1762, and around two million people now line Fifth Avenue. Chicago is the one watched for its river: since 1962 the plumbers' union has dyed the Chicago River green on parade morning, using a vegetable dye first used to trace leaks. Savannah's parade began in 1824, when a few dozen Irish immigrants marched to church; it marked its bicentenary in 2024 and is the South's largest, filling the city's historic squares. Boston's parade, through South Boston, carries the city's Evacuation Day history on the same date. All four happen on or beside 17 March. Pick on character: New York for scale, Chicago for the river, Savannah for the setting.

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