This defensive tower “die Schnecke” (the snail) controlled the former defensive wall, situated between the midle Altegässer and the now equally torn down Hammergässer Gate, (crossing: Unterer Zwerchweg/Mühlstraße).
The weighty building from the end of the 14th century was still not roughcast in1900, so that the interesting construction of foundation and pointed cone roof can be easily recognised, a technique that can also be seen on the “Trulli” in the vineyards.
