An inventory of German outdoor public stairways found by Doug Beyerlein (firstname.lastname@example.org) and others with each stairway having 100 or more stairs. Go to publicstairs.com for more information and stair maps for other locations.
Spitzhaus Stairway: 397 stairs
Lower end: Am Goldenen Wagen
Upper end: Spitzhaus Street
Parking: limited parking at Spitzhaus
Note: location of Saxon Mount Everest Marathon stair race; http://www.treppenlauf.de/home.htm