The Specola (Observatory) is the seat of the ancient astronomical observatory of the University of Padua: is placed on top of the Torlonga tower, the larger of the two towers of the ancient Castle of Padua. It is 49.59 m high.
Galileo Galilei had the chair of mathematics at Padua University and here he remained for more than a decade. In Padua invented and built the first telescope with which wrote the first treatise on the celestial sphere.