Along the colonnaded street you will see the ruins of the public fountain, or Nymphaeum, which was dedicated to the local water nymphs. Only the foundations now remain, under the shades of the rich green foliage of the one and only tree in the middle of the central Wadi. The Nymphaeum marks the junction of Wadi Mousa with Wadi Mataha.
It was designed as a very flattened triangle to assist the confluence of the two streams and may have been one of the terminals of the water system which went through the Siq.