Rosenstein Tunnel

In principle, the Rosenstein hill could have been bypassed, but the tunnel allowed a better positioning of Cannstatt station and kept the palace garden (Schlossgarten) from being cut by the railway.

The completion was delayed by a water and mud intrusion, caused by leaky basins around the castle.

[3] In World War II, it served as an air raid shelter and was rented by Mahle GmbH until 1946.

When the Stuttgart rail network was reconstructed in the early 20th century, the section between the Central Station and Cannstatt (and beyond) was rebuilt with four tracks.

The First World War and the lack of money stopped further work on the new railway lines in 1917.

The preservation of the existing tunnel was examined but rejected in the course of the planning approval process because this would have meant that the railway network would have continued to divide the lower castle garden (Schlossgarten).

In the Mittnachtstrasse area a branch structure will be provided where the tracks to and from Stuttgart North merge with the tracks to and from Bad Cannstatt before the tunnel connects with the existing S-Bahn trunk line tunnel at the Central Station.

A 1,050 metre-long road tunnel with two two-lane tubes was built under Rosenstein Park in association with the upgrade of Federal Highway B 10.