Tower of the Winds
The observations made with the sundial provided essential confirmation of the need to reform the Julian calendar. The anemoscope, in contrast, was a complex mechanism attached to the ceiling which was used to measure the strength and direction of the wind but soon stopped functioning. The instrument may have led to the other name of the tower, Tower of the Winds; however, an ancient observatory at Athens was also called the Tower of the Winds and might have been the source for inspiration.