Nymphaeum is a public fountain found in the heart of Amman. Built during the Roman Empire in the 2nd century CE, it is relatively well preserved today. It is located on Al-Hashemi Street, southwest of the Odeon and a close distance from the Roman Theatre and Hashemite Plaza.
In the Nymphaeum, there were water channels, fountains, and a 3m pool where the water from the spring was collected. Today, though there is no water, most of the bricks and grey stone structures remain. The Corinthian columns still stand and there are also the remnants of the arch. One can see the floor and shape of the pool, though the pool floor is moss-covered. Since 2015, restoration has work begun on the Nymphaeum. Amman was called Philadelphia in the Roman and Hellenistic periods. Thus, the Nymphaeum is also referred to as the old public fountain of Philadelphia.