Dar al-Magana (Water Clock), Fes

Across Talâa Kebira Street, nearly opposite the entrance of the Bou Inania Madrasa, you will spot an extraordinary water clock ("magana") crafted by the late-13th century Abou 'I-Hassan Ali, who was especially important in the fields of trigonometry and practical astronomy. Although the clock was removed for research purposes, the woodwork has since been restored, while the metal components await replacement, as part of a comprehensive renovation project aimed at revitalizing many of the Medina's long-neglected sites.

A captivating enigma, this water-run hydraulic clock features a row of thirteen windows and platforms, seven of which still hold their original brass bowls. Despite considerable efforts, its exact functioning remains elusive. However, according to a contemporary account, every hour, one of its windows would open, releasing a weight that dropped into the corresponding bowl below.