Graduation tower in Salinenpark Werre

The graduation movement is a replica of 1989/90. It is used for outdoor inhalation and is especially pleasant on warm summer days.

A graduation movement (also Leckwerk) is a plant for salt production. It consists of a wooden scaffolding, which is filled with brushwood bundles (mainly blackthorn). Grading the verb means "concentrating a substance in a medium". In the case of a graduation mill, the salinity in the water is increased by passing brine through the brushwood, whereby water naturally evaporates. In addition, impurities of the brine are deposited on the thorns; This increases the quality of the salt produced. Many graduation towers are part of a salt works that consists of a graduation mill and a saline. Often, graduation movements are incorrectly referred to as "salines." Occasionally, brush installations in swimming pools are also called graduation works, which function like graduation units, but are significantly smaller than comparable systems, which are located approximately in spa parks.
Source: Wikipedia

A nice place to linger along the route