The Old Courthouse is a historic building located in St. Louis, Missouri. Constructed between 1839 and 1864, it served as a center for legal proceedings and government activities. The courthouse is notable for its distinctive dome and Greek Revival architectural style, making it a prominent landmark in the city. Today, the Old Courthouse is part of the Jefferson National Expansion Memorial and houses exhibits related to the history of St. Louis and the Louisiana Purchase. It is also famous for being the site of the Dred Scott case, which played a significant role in the history of civil rights in the United States.