Explore the history of downtown Cincinnati’s oldest surviving wooden residence still in its original location. The Baum-Longworth-Sinton-Taft historic house turns 200 this year! Constructed around 1820 by entrepreneur Martin Baum, the National Historic Landmark became a public museum in 1932 to house the exceptional art collection of its final residents, Charles Phelps Taft and Anna Sinton Taft.