Washington DC, formally known as the District of Columbia, is the capital of the United States of America. The city is also commonly referred to simply as Washington, D.C. or Washington the DC. Founded on 1790, Washington DC is the seat of the US government and has an estimated resident population of close to 600,000. The number of people, however, rises to over a million during the week as a lot of people working in DC commute from neighboring cities.

As a planned city, the design of Washington DC was largely the work of French-born architect Pierre Charles L´Enfant. He was commissioned by President Washington to plan the layout of the nation´s new capital city.

The city has a diverse economy, with an increasing focus on business service. It also has a growing tourism economy and is it receives millions of tourists, both local and foreign, each year. Top attractions in Washington DC include its many museums and historical landmarks.