The city of Washington, the capital of the United States of America is located in the District of Columbia (DC for short) Many people consider Washington DC to be one of the most beautiful cities in the world. It is filled with many parks, wide streets and impressive buildings. In the center of the city, in Capitol Park, visitors' eyes focus on the Capitol, where Congress meets to make laws. Many visitors come to Washington DC to see the White House. It is the greatest attraction for many of them. The White House, the official residence of the President, is situated at 1600 Pennsylvania Avenue, N.W. The largest room in this building of over the hundreds room is the East Room, scene of many state receptions, balls and musicals. Other famous rooms are: the Green Room, the Blue Room, the Red Room, which are used for afternoon teas and for receptions held before state dinners. The Blue Room, the most formal of these "colors" room is an oval-shaped room connecting the Green and the Red Rooms. On the second floor, the floor with the family quarters and quests rooms, is the Lincoln Room, which one served as an office for president Lincoln but today serves as an honor guest room. In this room Lincoln signed the emancipation proclamation of 1863. Other landmarks in Washington DC include memorials to three Presidents: The Washington Memorial, The Lincoln Memorial and The Jefferson Memorial; The Library of Congress, The National Gallery of Art, The John F. Kennedy center for the Performing Arts. The Capitol is in the very center of Washington. It is located on the Capitol Hill, the highest point in the city. The Capitol is the highest building in Washington. There is a law in Washington not to build buildings higher than the Capitol. The corner stone of the Capitol was laid by George Washington on Sep 18th, 1793. The Capitol is the seat of the government of the United States of America.