Grading towers have been known since the Middle Ages.

They are formed by elaborate weaves of special wild shrubs traversed by harmonious cascades of saline water.

The evaporation of water and the pulverization due to the fall effect, releases saline ions in quantity into the environment creating the aforementioned Marine Microclimate.

Over time, as the salt settles on the twigs, it forms stalactites of white salt, with a striking aesthetic effect.