The church of Saint Casimir in Katowice was built between 1930 and 1933, as a garrison church serving the soldiers of the 23 Infantry Division of the Polish Army stationed in the city. The church was the first religious building in the country built in the style of simplified modernism, or functionalism. Its designers were Leon d'Arma Dietz and Jan Zarzycki. The interior is decorated in the Art Deco style.
