Kiel Auditorium was an indoor arena located in St. Louis, Missouri. It was the home of the St. Louis University basketball team and hosted the NBA's St. Louis Hawks, from 1955 to 1968. The arena, completed in 1934, at a cost of $6 million, seated 9,300. It was originally named the Municipal Auditorium, but was renamed in honor of former St. Louis Mayor Henry Kiel in 1943. A unique feature of the auditorium was that it was split into two; the front of the building was the Kiel Opera House. It was possible to use both sides at once as the stages were back to back. President Harry Truman gave a speech there in which both sides were opened to see his speech.