South Dakota

South Dakota is one of the 50 states in the US. It's capital city is Pierre and it's largest city is Sioux Falls.

History
After getting run out of Florida, the Simpson family was trying to decide on where to go for their next vacation. They were looking at a map of the US that had most of states crossed out, which were apparently all the states that the Simpsons were no longer allowed to enter.

While driving Bart to a disciplinary camp in Oregon, Homer passes a sign that reads "Mount Rushmore - 20 feet out of your way!"