The Citadel hill of Amman, known as Jabal el Qala, has been inhabited for centuries, important as a military and religious site. It dates back to Roman and Byzantine times, and later work was carried out in the early Islamic era. Remains unearthed at the northern and eastern ends of the Citadel, possibly date back to the Bronze Age. The Citadel also is home to the Temple of Hercules which is said to have been constructed under the Roman empirical ruler Marcus Aurelius who reigned from AD 161-180, is similar to the Temple of Artemis in Ephesus.