The Baháʼí Faith's House of Worship for the North American continent, located in Wilmette, Illinois, depicts religious symbols on each of its 9 outer pillars. "The symbols are arranged in chronological order-from bottom to top-on the pillars. That's why the swastika is at the base, with the Star of David above it..." The design dates to 1920 but construction was not completed until 1953. The largest Baháʼí House of Worship in the world, the white domed building has been listed on the National Register of Historic Places since 1978.