The name remained: like the walls and watchtowers, the fosse laid out by the Counts of Kyburg belonged to the fortifications of the city. Today the "Graben" is a boulevard with a Mediterranean feel, inviting you to indulge yourself with its charming street cafés, restaurants and boutiques.

An avenue of trees runs through the wide alley like a green island. In addition, here you can find the "Holidi", an enormous wooden man created by the sculptor Werner Jans.