With the securitization of the town charter by Emperor Charles IV in 1355, the town wall with the Hersbrucker Tor and the Nürnberger Tor may also have been built.
The Hersbrucker Tor around 1476. Remnants of the city wall that are not accessible to the public are located in the Spitalhof.
Source: lauf.de/index.php?id=74
"... At the upper market square you finally leave the old town again through the Hersbrucker Tor. But we stay in the old town and go to the lower market square ..."
Find out more about the many sights of Lauf at: netreisetagebuch.de/lauf-an-der-pegnitz-sehenswuerdigkeiten