Two hundred years ago, in Buenos Aires (then capital of a Spanish colony), a week-long series of revolutionary events took place, known as the Revolucion de Mayo, which set in motion events that led to Argentina's eventual declaration of independence from Spain in 1816. This week, millions of Argentinians, their neighbors and foreign dignitaries gathered in Buenos Aires to celebrate their bicentennial with lavish parades festivals and performances. Collected here are recent scenes from Argentina as its citizens commemorate 200 years of eventful history. ( 30 photos total