The Nagling well house is a former well house of the brine pipeline from Bad Reichenhall to Traunstein in Weißbach on the Alpenstrasse.
Right in front of the well house, the Himmelsleiter leads down to the Alpenstrasse.
The staircase that runs here was part of the first Bavarian brine pipeline, which was built from Reichenhall to Traunstein between 1617 and 1619. The construction of the pipeline had become necessary at the time because the wood needed to boil the brine was no longer available in the Reichenhall valley basin in the required quantities. The Himmelsleiter represented the connection from the low brine reserve to the high brine reserve (Bergstüberl). The pressure pipeline runs next to it, which was originally made of lead and later in cast iron pipes.
During the renovation of the first brine pipeline (around 1800) and the construction of the second brine pipeline to Rosenheim, this staircase was extended from its original length of 113 meters to 207 meters (556 steps).
The lower 40 meters have been privately owned since 1978.
After the renovation in 1985, the remaining 167 meters (420 steps) are accessible again.
The former saline plant is unique in its kind. It is a technical monument of particular historical value.