Introduction to the St. Louis Historical Museum: This green-roofed dome-style building is the Old Courthouse. Over the past 150 years, it has been a place used by the St. Louis city government to handle judicial trials. It must be mentioned that this The court once made a decision that changed the history of the United States: In 1850, the black slave Dred Scott appealed to this court in order to seek freedom. In the end, the court ruled that he and his wife became free men. This ruling later led to the development of the North and South of the United States. war. Today, the old courthouse has become the St. Louis Historical Museum. In front of the museum is a bronze sculpture of St. Louis wearing a felt hat and a cloak, riding majestically on a horse.