He soaks up some old-school jazz where Duke Ellington began his career and grabs a bite at the diner chosen by President Obama for a snack before his inauguration. At the United States Naval Observatory, Michael discovers the railroad origins of the time zones in operation across the US. Heading south to Alexandria, Virginia, Michael explores a former slave market and hears how African-Americans were once bought and sold. He ends this leg in Mount Vernon, the Palladian home of the nation's first president, George Washington, where he gets into a spot of bother at an archaeological dig.