Monday, March 17 is St. Patrick's Day, celebrating all things Irish in the U.S. and around the world. Cities celebrate with parades, bar crawls and more.

It was among Irish American communities that the day became the celebration it is, from its roots as a more solemn day with a religious observance in Ireland.

It’s that time of year again when more than a million revelers fill the streets of America’s most Irish big city for the South Boston St. Patrick’s Day parade

A group of out-of-state firefighters were reportedly booted from the parade route. “We were made aware that some out-of-state firefighters were not adhering to our Code of Conduct,” the Council said in a statement.

NYC St. Patrick’s Day Parade is finally here! The popular event is taking place in Manhattan starting at 11 a.m. at Fifth Avenue and West 44th Street and will march uptown to East 79th Street. Here’s a look at the marching order.

The Princess of Wales sipped half a pint of Guinness as she celebrated St Patrick's Day with the Irish Guards. Catherine, dressed in a bottle-green and percher hat, presented the traditional sprigs of shamrock to officers,