You will be surprised to know that some people believe that New York is the capital of the U.S, as it's the largest and probably the best known city in the country. Well, it really WAS the first capital of the United States once the Constitution was ratified. The creation of a capital district located on the country's East Coast began in 1790. Since 1800, Washington, D.C., formally the District of Columbia is the capital of the United States.


Note from history: The U.S. Constitution provided for a federal district under the exclusive jurisdiction of the Congress, that's why the District is not a part of any U.S. state.

More Info: en.wikipedia.org