The kasbah is now open to tourists, after considerable rebuilding, as it was heavily destroyed during World War 2. It was built by the Hafsids in the 13th century on the foundations of a Byzantine fortress. Later, many additions came.
It is mainly enjoyed from the outside. It continues along 3 sides, and appears in near perfect condition, and is as fine in its details as many more famous kasbah.
Most of the interior is used for modern purposes, and therefore inaccessible. The only nice part is the corner on the picture below.