Update: Readers helped to identify this as the St. Louis Seventh Church of Christ, Scientist, built in 1931 according to plans by Aegerter & Bailey. To read a masterful article by Mimi Stiritz on all of the churches in St. Louis, click here.
Does anyone know the original name of this church? It was certainly not originally the New Testament Christian Church. It is one of the most unique Gothic Revival churches in the city of St. Louis, with an octagonal building plan.