The Temple of Juno Caelestis, was built on the outskirts of the city between 222 and 235 AD.
Juno is an ancient Roman goddess, the protector and special counselor of the state. She is a daughter of Saturn and sister (but also the wife) of the chief god Jupiter and the mother of Mars and Vulcan. Juno also looked after the women of Rome. As the patron goddess of Rome and the Roman Empire she was called Regina (“queen”) and, together with Jupiter and Minerva, was worshipped as a triad on the Capitol (Juno Capitolina) in Rome.
Caelestis means “of the sky, heavenly”
Diocletian built the massive palace in preparation for his retirement on 1 May 305 AD. It lies in a bay on the south side of a short peninsula running out from the Dalmatian coast, four miles from Salona, the capital of the Roman province of Dalmatia.
After the Romans abandoned the site, the Palace remained empty for several centuries. In the 7th century nearby residents fled to the walled palace to escape invading barbarians. Since then the palace has been occupied, with residents making their homes and businesses within the palace basement and directly in its walls. Today many restaurants and shops, and some homes, can still be found within the walls.