Heri es Souani
The Royal Granaries were one of Moulay Ismail's greatest achievements during his reign, designed to store grain to feed his 10,000 horses for up to 20 years. To keep the grain from rotting, the granaries were kept cool by thick walls, hanging gardens, and an underground cistern with water ducts powered by donkeys. Behind the granaries are the ruins of the royal stables, where around 1,200 purebreds were kept. To the left of the door out to the stables, notice the symmetry of the stables' pillars from three different perspectives. Acoustically perfect, the site is now often used for concerts. The adjacent Agdal Basin served as a both a vast reservoir for the gardens and a lake. It's 2 km (1 mile) south of Moulay Ismail's mausoleum, so take a petit taxi in hot weather.