Diocletian was a Roman emperor, born in Dalmatia in the third century. After a successful military career, he retired from the emperor role and devoted himself to his garden in Solin, his hometown located near Split. During his life Diocletian built and reconstructed many things; baths in Rome, arches, numerous roads, aqueducts, monuments, amphitheater and many theaters... However, a perfect example of antique architecture, which Diocletian built, is certainly the Palace in Split, named after him. It was built between the 3rd and 4th century and was made of materials found nearby. The palace is preserved well in general, but in some places only parts remain. It is one of the most important works of Byzantine and early medieval art. The palace has four gates to the city; bronze (Porta Aenea), silver (Porta Argentea), iron (Porta Ferrea) and the main entrance to the palace, Golden Gate (Porta Aurea). The walls surround many palaces and villas. Papalić Palace (15th century) and Cindro Palace (17th century) are the most important examples of Gothic and Baroque architecture. What stands out in the Palace is certainly St. Duje Cathedral, built in the Middle Ages, that once was the emperor's mausoleum. There is also the Peristyle, the central open space in front of the Emperor's residence, which was used for some major events in the Palace. Today it is a space where, because of the excellent acoustics, cultural events take place. Opposite the cathedral there is a Temple of Jupiter, which was converted into a baptistery during the early Middle Ages. People's Square, near the Peristyle, formed the urban expansion of the city and is full of palaces and villas. Entire walls surround the many palaces, temples, streets, medieval forts, Romanesque churches from the 12th and 13th century, squares and other attractions. When the city began to spread it was built outside the walls. Interestingly, the Palace was once a home to 9000, while today it is home to about 3000 people. Diocletian's Palace is on Croatia’s banknote for 500 Kuna.