The National Gallery of Art is a world-renowned art museum located in Washington, D.C. It houses a vast collection of artwork from the Middle Ages to the present day, including masterpieces from renowned artists such as Rembrandt, Monet, and Picasso.
From Wikipedia
The National Gallery is an art museum in Trafalgar Square in the City of Westminster, in Central London, England. Founded in 1824, it houses a collection of more than 2,300 paintings dating from the mid-13th century to 1900. The current director of the National Gallery is Gabriele Finaldi.