The Basilica of St. Louis, King of France is the original St Louis, Missouri Cathedral, and first Catholic cathedral west of the Mississippi River.
It is located in the historic riverfront of St. Louis, near the St. Louis Arch.
In the twentieth century the Catholic diocesan seat was moved to the New Cathedral, and the Old Cathedral was renamed the Church of St Louis, King of France, and in 1961 it was made a Basilica, giving it the present name.
