Kairouan

The Islamic Cultural Capital, Kairouan is the fourth most holy city in Islam and a UNESCO World Heritage site, founded in 670 AD. At the time, it was a densely forested area, but the desert has won.

The 9th-century Aglabid pools, which once brought water to the city via a no longer extant aqueduct.

An exquisite mausoleum designed by chap with an allegorical bent for birth, life, death, and paradise, for Sidi Sahab, a friend of Mohammed’s, in the 15th century.