Fiesta del Olimar in Treinta y Tres
Fiesta del Olimar is Treinta y Tres' contribution to Uruguay's national Semana de Turismo, the five-day Easter-week holiday, named for the Rio Olimar that runs through the city and gives residents of the department their popular nickname of olimarenos, a name tied to the department's own founding history.
Uruguay's Semana de Turismo has an unusual origin story rooted in the country's strong tradition of secularism: when the Uruguayan state formally completed its separation from the Catholic Church through law 6997 in October 1919, several religious holidays were renamed or reframed under secular labels, and the days coinciding with Holy Week were extended into a five-day, Monday-through-Friday holiday period officially called Semana de Turismo rather than Semana Santa.