The stars above foundations of ancient torment, Padua

The 14th-century tower was once part of a medieval castle in Padua, Italy. It was raised further in the 14th century, by Francesco I da Carrara, another ruler of Padua. In 1767, the tower was converted into an astronomical observatory. Abbé Toaldo added an inscription to the entrance in 1771, marking its use as an observatory. Today, La Specola museum houses frescoes depicting famous astronomers and a collection of period telescopes and astronomical instruments, and the university of Padua decided to build a modern facility represented by the Asiago Astrophysical Observatory elsewhere in the 1940s.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons