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David Westerby of Kenosa, Wis. left, yells during the St. Patrick's Day parade in Chicago, on Saturday.
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Tour boats travel the Chicago River after workers dyed it green to kick off the city's St. Patrick's Day celebration on Saturday in Chicago. The dying of the river has been a tradition in the city for 43 years.
Peter Foley / EPA
Bagpipers march in the 252st Annual Saint Patrick's Day Parade in New York, on March 16, 2013.
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Members of the Ireland Police department wait to join the rest of the parade on 5th Avenue during the 252th New York City St. Patrick's Day Parade on March 16, 2013.