 The stone is engraved with the word Maryland on one side and jurisdiction of the United States on the other. Powers waves his arms, showing where the border runs. The line runs right through this way. The U.S. Constitution itself authorized the creation of this new city, a 10-mile by 10-mile square. The stones were laid out every mile along those borders. Most are like the one we're looking at, though some have been worn down even smaller.