Washington, D.C.
Washington was named after the first U.S. President George Washington. "D.C." stands for "District of Columbia". At first, it was made up of a piece from Virginia south of the Potomac River and a piece from Maryland north of the Potomac River. In 1847, Virginia's piece was returned to it, and is now Arlington County and part of the city of Alexandria. Since 1847, all of the District of Columbia is on the north side of the Potomac River. The District of Columbia used to have other small towns which used "D.C.".