Luck o’ the Irish: St. Patrick’s Day celebrations around the world

As a tradition, the Chicago River is dyed green during St. Patrick's Day celebrations in Illinois on March 15.

A child wearing a green hat with a shamrock takes part in a parade celebrating St. Patrick's Day in Bucharest, Romania, on March 16.

Dancers take part in a St. Patrick's Day parade in dentral London on March 16.

A girl wearing shamrock-shaped glasses takes part in the St. Patrick's Day Parade in Munich, Germany, on March 16.

A man holds a green flag during the St. Patrick's Day street parade held in downtown Bucharest, Romania, on March 16.

A woman walks down the street decked out in St. Patrick's Day gear on March 16 for the 2014 Shamrock Run in Oregon.

A dog gets dressed up to celebrate the 2014 Detroit St. Patrick's Day parade on March 16 in Michigan.

Irish bagpipers perform during a St. Patrick's Day parade in Bucharest, Romania, on March 16.

A man wearing a costume with the colors of the Irish flag takes part in a St. Patrick's Day parade in central London on March 16.

A woman shows her Irish flair at the St. Patrick's Day Parade in Berlin, Germany, on March 16.

The leaning tower of Pisa in Italy is colored green on March 16 to celebrate Ireland's national holiday on the eve of St. Patricks Day. The event is part of the initiative "Global Greening", sponsored by Tourism Ireland, where famous monuments in many cities of the world are colored green to show friendship towards the European island.

A float passes through the St. Patrick's Day parade in central London on March 16.

Dancers take part in the St. Patrick's Day parade in London on March 16.

Little girls Irish dance as they participate in the street parade in Birmingham, England, on March 16.

Irish Drag Queen Peachy Queen, second from right, poses alongside supporters and prepares to march in the St. Patrick's Day parade on behalf of all gay, lesbian, bisexual and transgender people for the first time on March 16 in Sydney, Australia.

Members of Penrith Gaels Football Club celebrate St. Patrick's Day inside the Three Wise Monkeys Hotel in Sydney, Australia on March 16.

The Brussels Grand Place in Belgium is lit in green for St. Patrick's Day on March 126 as part of Tourism Ireland's Global Greening Initiative.

A woman wearing a leprechaun costume attends a St. Patrick's Day parade in central London on March 16.

In Dublin, Ireland, articipants take part in the St. Patrick's Day parade, the religious feast day of the nation's patron saint. More than half a million spectators were in attendance on March 17.

Mariah Delvalle, made up as a zombie, is dressed in green to march in a St. Patrick's Day parade on March 9 in Asbury Park, N.J.