The Oruro Carnival is an annual festival held in Oruro, Bolivia, recognized as one of the largest and most important cultural events in the country. It typically takes place in February or March, coinciding with the Catholic observance of Lent. The carnival features vibrant parades, traditional music, and elaborate costumes, showcasing Bolivia's rich cultural heritage. The event is famous for its diverse performances, including the Diablada, a dance that represents the struggle between good and evil. In 2001, the Oruro Carnival was declared a Masterpiece of the Oral and Intangible Heritage of Humanity by UNESCO, highlighting its significance in Bolivian culture.