The Carnival continued its evolution in small/unimportant towns out of view of the rulers. The result was the uninterrupted celebration of Carnival festivals in Barranquilla (see Barranquilla's Carnival) now recognized as one of the Masterpieces of the Oral and Intangible Heritage of Humanity. The Barranquilla Carnival includes several parades on Friday and Saturday nights beginning on 11 January and ending with a six-day non-stop festival, beginning the Wednesday prior to Ash Wednesday and ending Tuesday midnight. Other celebrations occur in villages along the lower Magdalena River in northern Colombia, and in Pasto, Nariño (see Blacks and Whites' Carnival) in the south of the country. In the early 20th century, attempts to introduce Carnival in Bogotá were rejected by the government. The Bogotá Carnival was renewed in the 21st century.