At the end of the pier, giving ferry passengers a come-hither look from her rotating pedestal, stands Imperia. Peter Lenk’s 9m-high sculpture of a buxom prostitute, said to have plied her trade in the days of the Council of Constance, was inspired by a short story by Honoré de Balzac, La Belle Impéria. In her clutches are hilarious sculptures of a naked (and sagging) Pope Martin V and Holy Roman Emperor Sigismund, symbolising religious and imperial power.