Fodor's Expert Review Cathedral of St. Louis

More than 41.5 million pieces of glass in 7,000 different colors were used to create the mosaics depicting Bible stories that cover 83,000 square feet of this cathedral's walls. You can learn more about these works in the lower-level Mosaic Museum, which also contains crypts, an original Kilgen organ console, historic vestments and religious items, and the throne used during the visit of Polish Pope John Paul II. Guided tours (available between 10 and 4) are free, but donations are suggested.