King Juan Carlos and Prime Minister Jose Luis Rodriguez Zapatero will formally unveil the new modernist extension designed by architect Rafael Moneo on Oct. 30 with the first show -- "Modern Masters: The Prado's 19th-Century Masters" -- opening the next day.
To help celebrate the event, entry to the Madrid museum will be free of charge between Oct. 31 and Nov. 4. After that, there will be no charge for people visiting the museum between 6-8 p.m. Tuesday to Saturday and 5-8 p.m. on Sundays. The Prado is closed on Mondays.
Until now the museum has been free all day Sunday.
The entry price to the museum at other times will remain at $8.50, which the museum said was one of the cheapest in Europe.