Wasserturm

Built in the 15th century, this was once, as the name suggests, a prison. The city walls which once connected it to the other towers were demolished several decades ago.

Built in 1491 as part of the old city wall. This is also called the 'Salt Gate' (Salztor), as until the turn of the last century salt was stored here.

This building is now a music conservatory, but it used to be a Jesuit College. Arthur Conan Doyle, author of Sherlock Holmes, once was a boarder here, and the school was also mentioned in Thomas Mann's The Magic Mountain.

This former church, first built in the 13th century and modified in the 17th century, is now used as a venue for contemporary art installation pieces.

Hosts exhibits of contemporary modern art.

The Pulverturm was built in 1460 and is the oldest of the city's four towers. As the name suggests, gunpowder was stored here. Today the tower is used as a meeting place by a local association.