What is Blair house?

Blair House is the official guest residence for visiting foreign dignitaries in Washington, D.C. Located across from the White House, it is part of the White House complex and is often used to host heads of state and other prominent guests. The house has a rich history, having been built in the 1820s, and it features elegant accommodations and historic furnishings. It is managed by the U.S. State Department and plays a key role in diplomatic relations.