From Muppet Wiki

The Metropolitan Museum of Art is one of the world's largest and most important art museums, located on the eastern edge of Central Park in New York City. The Met's permanent collection contains more than two million works of art from around the world. The collection's holdings range from treasures of classical antiquity, like those represented in its Greek and Cypriot galleries, to paintings and sculptures from nearly all the European masters, to an extensive collection of American art. The collection also contains extensive holdings of Egyptian, African, Asian, Oceanic, Middle Eastern, Byzantine and Islamic art. The museum opened on February 20, 1872.

The Sesame Street cast visited the museum in a 1983 special, Don't Eat the Pictures. In the special, the Sesame Muppets are locked in the museum overnight. They interact with various masterpieces and art objects, including Egyptian drawings, a Roman and Greek statue display, a suit of armor and a portrait of George Washington.

The special was highlighted in Sesame Street Magazine issue 130 (Dec 1983).