Diocletian's Palace was built at the end of the third century AD as a residence for the Roman emperor Diocletian, and today forms about half of the old town of Split, Croatia. While it is referred to as a "palace" because of its intended use as the retirement residence of Diocletian, the term can be misleading as the structure is massive and more closely resembles a large fortress: about half of it was for Diocletian's personal use, and the rest housed the military garrison.