Designed by John T. Comes of Pittsburg, the plans were slightly modified by architect John Marshall of Topeka. The cruciform Romanesque structure faces west with its towers dominating the prairie landscape. On the facade above the rose window, a stone statue of its patron, St. Fidelis keeps watch. The church is 220' long, 110' wide at the transcepts and 75' at the nave. Its ceiling is 44' above the ground and the towers rise 141'. The seating capacity of 1,100 made it, at the time of its dedication, the largest church west of the Mississippi.