The largest reservoir, the Dar al-Hana reservoir, is overlooked by a modern palatial pavilion, though multiple earlier pavilions and palaces existed on the same site in earlier centuries. Another palace complex, the Dar al-Bayda, was built further north during the 19th century, and various other pools, pavilions, and industrial structures were built in various parts of the gardens by Alaouite sultans.[40][23][41][42]