Man dressed as leprechaun hovers above Chicago River
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St Patrick's Day: Hovering leprechaun in Chicago

17 March 2013 Last updated at 10:16 GMT

Millions of people around the world are celebrating the patron saint of Ireland on St Patrick's Day.

Seventy iconic world landmarks are turning green to mark the occasion.

In many places festivities were held on Saturday because of religious observances.

Beth McLeod has more.