More than 100 parades are being held across Ireland to mark St Patrick's Day, the feast day of the patron saint of Ireland, with up to 650,000 spectators expected to attend the parade in Dublin.

The first St. Patrick's Day parade currently on record was held in St. Augustine, Florida, in 1601, historians say. Not, as some might assume, on the Emerald Isle.

Over the years, the religious holiday commemorating the death of Saint Patrick, the patron saint of Ireland, has ...

Yet, for a faith steeped in the veneration of the remains–or relics–of saints, St. Patrick’s relics have been debated by historians, archeologists, and the clergy for centuries.

St. Patrick’s Day commemorates the death of St. Patrick but has evolved into a celebration of Irish culture with parades, food, music, dancing, drinking and the color green.

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.

The first known St. Patrick’s Day parade took place a year later, and the first official New York City St. Patrick's Day Parade was in 1848, History.com reports.

Here’s why "St. Paddy's" is spelled that way, the origin of wearing green and which historic Florida town held the first American St. Patrick's Day parade.