The towers were converted from salt extraction facilities into open-air inhalation clinics during the 19th century.
Blackthorn branches (Sloe) are used because their fine structure provides the optimal surface area for brine evaporation.
The salt-laden mist generated by the tower creates a sea-air climate similar to coastal regions despite the inland location.
The graduation towers are gravity-fed, with brine pumped to the top and trickling down through the brushwood.
The Old Graduation Tower in Bad Rothenfelde is a historic saline inhalation structure originally constructed in 1777 for salt production. It features an extensive framework of blackthorn bundles over which brine trickles to increase concentration. The evaporation process creates a microclimate rich in aerosolized salt particles, which are traditionally used for respiratory health benefits. The structure is part of a duo of towers that define the town's therapeutic spa identity. Modern maintenance preserves the authentic timber-frame design and traditional wood-stacking techniques. The facility is situated within a landscaped spa park that provides walking paths along the length of the tower. It remains a functional piece of industrial heritage utilized for public inhalation treatments.
From the center of the Kurpark looking upward toward the timber framework against the sky.
Walk the entire length of the structure to experience varying concentrations of salt mist.
Bring a windproof jacket as the area near the tower can be significantly cooler and damper than the surrounding park.
Inhale deeply while walking along the leeward side to maximize the effect of the aerosolized brine.
Do not attempt to touch the brine-soaked blackthorn walls, as they are sticky and often coated in mineral deposits.
The brine pumps may be deactivated during sub-zero winter temperatures to prevent ice damage.
