	Abd al-Aziz constructed in Hulwan a mosque, a number of churches (see below) and palaces, and planted there vineyards and palm trees. He erected a nilometer in the new city, although it was replaced by the nilometer built on the Nile river island of al-Rawda in 715. Hulwan was well known for the glass pavilions patronized by the governor and an artificial lake fed by an aqueduct. The city's prosperity under Abd al-Aziz was praised by the poet Ubayd Allah ibn Qays al-Ruqayyat.