Washington, D.C., formally the District of Columbia, also known as just Washington or simply D.C., is the capital city and federal district of the United States. It is located on the east bank of the Potomac River, which forms its southwestern and southern border with the U.S. state of Virginia, and it shares a land border with the U.S. state of Maryland on its remaining sides. The city was named for George Washington, a Founding Father and the first president of the United States, and the federal district is named after Columbia, a female personification of the nation. As the seat of the U.S. federal government and several international organizations, the city is an important world political capital. It is one of the most visited cities in the U.S., seeing over 20 million visitors in 2016. The flag of Washington, D.C., consists of three red stars above two red bars on a white background. It is an armorial banner based on the design of the coat of arms granted to George Washington’s great-great-great-grandfather, Lawrence Washington of Sulgrave Manor, Northamptonshire, England in 1592. This coat of arms was used privately by the president in his home at Mount Vernon. In heraldry, the stars are called mullets and the coat of arms is blazoned as argent two bars gules, in chief three mullets of the second. 4K Resolution.