Stephen Eccher is with a group in Switzerland and in Stein he was shown this mural. Two things: I have never seen this mural anywhere and I was unaware that Zwingli had ever been to Stein to preach. So I had to check and sure enough-
On the 12th of December Zwingli presided over a synod at Frauenfeld, in the canton of Thurgau, some twenty-two miles north-east of Zurich, at which were assembled not only the preachers of Thurgau but of St. Gall, Appenzell, and the Rhine valley, along with representatives of the congregations. In all there were some five hundred clergymen. The principal business of the synod apparently was to bring the clergy into line. Consequently those ministers who had been inclined to accept Anabaptism were either compelled to confess conversion to the orthodox view or else they were deposed on the ground of ignorance or deprived of their stipends. Other important business of the synod related to the reformation of the monasteries and the secularisation of their property. Zwingli on his way back went through Constance, preached there on the 19th of December, as he did later on at Stein and Diessenhofen, two towns on the Rhine fifteen and twenty miles respectively west of Constance. — Samuel Macauley Jackson, Huldreich Zwingli: The Reformer of German Switzerland (1484–1531), Heroes of the Reformation (New York; London: G. P. Putnam’s Sons; Knickerbocker Press, 1901), 294.
(photos by Stephen Eccher, and used with permission. Please do not distribute without the photographer’s express permission)