From the Nymphaeum, the short stroll to the King Hussein Mosque bustles with pedestrians, juice stands and vendors. The area around the King Hussein Mosque, also known as al-Husseini Mosque, is the heart of modern downtown Amman. The Ottoman-style mosque was rebuilt in 1924 on the site of an ancient mosque, probably also the site of the cathedral of Philadelphia. Between the al-Husseini Mosque and the Citadel is Amman’s famous gold souq, which features row after row of glittering gold treasures. To the northeast stands the small theater, or Odeon, which is still being restored. Built at about the same time as the Roman theater, this intimate 500-seat theater is used now as it was in Roman times, for musical concerts. Archaeologists think that the building was originally covered with a wooden or temporary tent roof to shield performers and audiences from the elements. Heading southwest from the theater complex, Philadelphia’s chief fountain, or Nymphaeum, stands with its back to Quraysh Street. Much of the fountain, which was completed in 191 CE, is hidden from public view by private houses and shops. The Nymphaeum is believed to have contained a 600 square meter pool, three meters deep, which was continuously refilled with fresh water. Jordan’s Department of Antiquities is currently excavating the Nymphaeum, and ultimately hopes to restore the site to its original structure by 2010.