Unofficially, the monument is also called Aerides (Greek: Αέρηδες), which means Winds. The structure features a combination of sundials, a water clock, and a wind vane.[1] It was supposedly built by Andronicus of Cyrrhus around 50 BC, but according to other sources, might have been constructed in the 2nd century BC before the rest of the forum. In summer of 2014, the Athens Ephorate of Antiquities began cleaning and conserving the structure; restoration work was completed in August 2016.[2]