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Virada Cultural is a round-the-clock cultural marathon that takes place in various parts of the Historic Center (Downtown), happening yearly around April–May. It is a free event that gathers an audience of several million of people circulating during a 24-hour, non-stop cultural party. Exceptionally, the metro and train work uninterruptedly during the event. During the 2012 edition, there were about 1,300 shows and 15 km of streets were occupied.