Louise graduation house
Louise graduation house
In 1753, the graduation tower 'Louise' and the adjacent graduation tower 'Friedrich' were built. Between 1772 and 1774, the graduation tower 'Charlotte' was constructed, becoming the last of the three Bad Sulza graduation towers.
All three graduation towers were technologically connected, so that the raw brine first trickled down the 'Charlotte' tower, then over the 'Friedrich' tower, and finally over the 'Louise' tower, before it was directed into the brine reservoir and the boiling pans. Originally, graduation towers were used to increase the salt concentration of the brine. The higher the degree (the concentration), the less fuel was needed when boiling the brine for salt production. Of the three graduation towers that were built in the second half of the 18th century as technical structures of the Sulza saltworks, only the graduation tower "Louise" has been preserved in an altered form. In 1953, the graduation tower "Louise" was destroyed by a storm and rebuilt, although significantly shorter in length and ridge height. In 1981, a major fire threatened the last graduation tower in Bad Sulza.
The history of the graduation towers at the end of the 19th century is closely linked to the development of the Sulza spa. With the realization that the brine has a healing and health-promoting effect, the graduation towers increasingly lost their original function.