Riosucio is a town and municipality in the department of Caldas in Colombia. It is best known for its biennial carnival, officially called the Carnival of Riosucio but commonly known by its former name of the "Carnival of the Devil", and is one of the biggest and most popular carnivals in Colombia. Located along the Colombian coffee growing axis, the municipality was made part of the "Coffee Cultural Landscape" UNESCO World Heritage Site in 2011.