The Robert Mills House, also known as Robert Mills Historic House and Park or the Ainsley Hall House, is a historic house museum at 1616 Blanding Street in Columbia, South Carolina. Built in 1823 to a design by Robert Mills, it was designated a National Historic Landmark in 1973 for its architectural significance.[4] The Historic Columbia Foundation owns and operates the home, which has been furnished with decorative arts of the early 19th century, including American Federal, English Regency, and French Empire pieces.