The Clock of Andronicus of Cyrrhus or Tower of the Winds is an intriguing structure that had a hydraulic mechanism. This 1st-century-BC octagonal tower was built by Andronicus, an astronomer from the Syrian city of Cyrrhus, a city founded by the Macedonian Seleucids in the 3rd century BC. It is a combination of a weather vane, sundial, and a hydraulic clock. The relief sculptures depicting the winds and their symbols are particularly impressive. In early Christian times, it is thought to have been consecrated and converted to a Baptistry.
In the 18th century, the clock became the Mevlevi Teke (a site for Sufi ceremonies), and was filled with green flags and other Islamic symbols. Every Friday, it witnessed the impressive sema (ceremonial dance) of the Dervishes.