Any religious tour to Zürich must begin at the Romanesque Grossmünster, symbol of the city and Zürich's religious heart and soul. This is the site where legend says Sts. Felix and Regula are buried, the cathedral that Charlemagne is said to have founded himself. More importantly, it was here in the Grossmünster that Huldrych Zwingli preached a new brand of Christianity in the early 16th century, one that would change the face of Switzerland and Protestantism.
The Swiss city of Kreuzlingen and its German counterpart Constance hug the straits that lead from the Rhine River into Lake Constance.
Originally built as the Notre-Dame-la-Neuve chapel, the 15th-century Auditorium became a lecture hall at the time of the Reformation (1536). On this site Calvin taught Reformed theology, and numerous Protestant refugee groups worshiped in their own tongue, including Italian Waldensians, the Dutch Reformed and the Scottish Presbyterians.
Since its founding in the 13th century, the Franciscan Church has been perpetually under construction or renovation.