U.S. News Insider Tip: The Paseo del Arte Pass allows you to visit the Prado, Reina Sofia and Thyssen ... and allot at least half a day to tour the museum. Three Cities in One Day: Segovia ...

From the iconic Louvre in Paris to the Prado in Madrid ... If you aren't happy about the price tag attached to a guided tour of a museum, Steves suggests exploring the place within earshot ...