Blair House is the official guest house of the President of the United States, located across the street from the White House in Washington, D.C.. It serves as a residence for visiting foreign dignitaries and heads of state. The house has a rich history, dating back to the 19th century, and features elegant rooms and beautiful gardens. Originally built in 1824, Blair House has been expanded and renovated over the years. It is often referred to as the "President's Guest House" and is managed by the U.S. State Department. The property is not only a place for hospitality but also a symbol of international diplomacy.