The Gate can be visited
Town Fortification Nürnberg-Laufer Schlagturm

The Laufer Schlagturm is a gate tower that was once part of Nuremberg's penultimate city fortifications. It is located at the Innerer Laufer Platz and is a component of the Inneres Laufer Tor. Its uniqueness lies in the striking clock from which it derives its name, which once announced the complex Nuremberg time.
History+
The tower, a sandstone ashlar construction with a pointed arch gate passage and evasion niches, presumably originated around 1250. The two upper floors and the reinforcing pillars were added in 1508.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:Laufer_Schlagtorturm,_N%C3%BAremberg,_Alemania,_2013-03-16,_DD_01.jpg?uselang=de
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 49.4560, 11.0837