From its origins as a French fur-trading post to the 4th largest city in the country, the early history can be told through the architectural legacy of the heart of the city. Learn the origins of the ‘Mound City’, from the bustling riverfront of the French-American entrepreneurs through the historic financial and retail districts of the City, you’ll find famous architectural and engineering marvels. Highlights: Old Courthouse, Old Cathedral, Gateway Arch, Eads Bridge, Old Post Office, Wainwright Building, Philip Johnson-designed office building.