The Great Mosque of Kairouan , also known as
the Mosque
of
Uqba is
one
of
the
most
important mosques in Tunisia, situated in the UNESCO
World Heritage town of Kairouan;
These cisterns, built by the Aghlabids in the 9th century are
more impressive because of their engineering sophistication
than as sights in themselves. Water was delivered by
aqueduct from the hills 36km west of Kairouan into the
smaller settling basin and then into the enormous main
holding basin, which was 5m deep and 128m in diameter.