Greece

Greece is a country in.

History
According to Herman Hermann, the Greeks knew that "the key to Springfield" was Elm Street.

When Krusty was taken to the International Court of Justice, in The Netherlands, one of the crimes he was charged for was "aggravated hey-hey" which he apparently committed while in Greece.

According to the that was running during an episode of Head Butt with Nash Castor, Europe put Greece on eBay.

Non-canon
Greece is the major setting in "D'oh, Brother Where Art Thou?".