Built in the 12th century, Koutoubia is the largest mosque in Marrakesh, well known for its 77-meter high minaret. It is sometimes also called Mosque of the Booksellers, due to the book market that once stood nearby. For the best view of the minaret, go to the splendid rose garden situated next to the mosque.
Unfortunately, non-Muslims are not welcome to enter the mosque.
Wikipedia https://en.wikipedia.org/wiki/Koutoubia_Mosque
Official Website http://www.mosquee-koutoubia.com/en/
Address Avenue Mohammed V, Marrakesh, Morocco
Coordinates 31°37'25.245" N -7°59'36.976" E