The oldest building in Marrakesh and the last example of Almoravid architecture in the city dates back to the 12th century. Adjacent to Almoravid mosque which no longer exists, this building was used before prayer for ablution, therefore there was an interesting system of toilets and showers. Note also the beautifully carved cedar ceiling and the traditional motives of palms and pine cones.
Combined ticket for the Almoravid Koubba + Musee de Marrakech + Medersa ben Youssef: 60 AED
Wikipedia https://en.wikipedia.org/wiki/Almoravid_Koubba
Address Derb Sidi Ishak, Marrakesh, Morocco
Coordinates 31°37'53.17" N -7°59'13.675" E