Cathedral of Sienna
The Cathedral of Siena is a Roman Catholic Marian church located in Siena, central Italy. A medieval church, it was completed in 1263. The interior of the church is designed with black and white marble stripes on the columns and the walls. These black and white stripes represent the coat of arms of Siena. The entire floor of the church is covered with an inlaid marble mosaic.
Donald, R. Wonders of Architecture (New York, NY: Charles Scribner & Co., 1871)