Theater San Materno Theaters. Ascona, Switzerlan.d. Drawing, Theater San Materno. Carl Weidemeyer, architect. Theaters. Ascona, Switzerlan.d. Drawing, Theater San Materno. Carl Weidemeyer, architect. Theater San Materno. Ascona, Switzerland, n.d. Carl Weidemeyer, architect. Theater San Materno. Ascona, Switzerland, n.d. Carl Weidemeyer, architect.