The building's unique heptagonal
structure contributes dynamic angles and multiple exposures, offering exceptional light and views.
The compact old part of town was built in the late Medieval era with two city gateways, a councilhouse with one of the oldest indoor-theatres of central Switzerland, and three heptagonal
fountains with bronze figures of more recent date.
At least three anal plates in cup; radianal very small, quadrangular (rectangular to trapezoidal), below and to right of anal X; anal X heptagonal
, higher than wide, somewhat smaller than radials, with stellate ridges to adjacent plates; one large sac plate immediately above anal X that is partially in aboral cup (Fig.