[3] It covers the area of the bridge Vorstadtbrücke, which is flanked to the west of the landing stage Zug Bahnhofsteg of the Zugersee Schifffahrt, and to the east of the Rigiecke.

Twenty-one hues have been contrasted in such a way that the colors of warm yellow-orange on the side of the Vorstadtquai, into violet, green and red, and finally the direction of the Alpenquai run into a cool blue.

Cracks on the shore prompted the city council to instruct the engineers Albert Heim and Robert Moser with a technical analysis, which was completed in July 1884; their report strongly criticized the project.

Because of the influence of the municipal minister of construction Clemens Henggeler, the critical report of Heim and Moser were hardly discussed in the city council, and the work was continued.

A second flooding followed in the evening: Shortly before seven o'clock the walls of the suburb of Zug Vorstadt faltered, the inhabitants fled in panic as the houses collapsed and sank in the lake.