Hundreds of thousands of people dressed in green took to the streets of Dublin on Monday, to watch Ireland's national St. Patrick's Day parade. Roughly 4,000 people and 12 marching bands from across Ireland,

St. Patrick’s Day has become a global celebration of Irish heritage, with the United States being the epicentre of festivities. Although originally a solemn religious day in Ireland, the celebration has evolved into a boisterous, cultural event in America, marked by parades, food, drinks, and, of course, the wearing of green.