Washington, DC

Washington, District of Columbia is a large city on Earth located in the eastern part of the United States of America. The city is not consider part of any state, and instead is located in its own political subdivision, also known as a Federal District.

History
The city was established as the capital city of the United States in the late 18th century. Washington was an important center of politics - not only in the United States, but the world as well - throughout the 19th, 20th and early 21st Centuries.

An Alternate History
One of the factions in the temporal cold war, the Na'kuhl, became stranded in the 20th century, and allied themselves with Nazi Germany. By providing them with advanced weaponry, they enabled German forces to capture Washington and most of the Atlantic seaboard by 1944. The Na'kuhl maintained a base in New York, where they endeavored to build a temporal conduit to return to the 29th century. This timeline was negated when the Enterprise NX-01, transported back in time by temporal agent Daniels, was able to destroy the temporal conduit. (ENT episode: "Storm Front")