The Mona Lisa went on a tour of the Us between November 1962 and March 1963. It was shown at the Metropolitan Museum of Art in New York and the National Gallery of Art in DC and was displayed for 1 week in each location. The  week in the MET drew over 1 million visitors despite bad weather, and its time in DC brought 600 thousand visitors to the National Gallery of Art. This accounted for more than 50% of the normal yearly visitors to the DC museum.