Named after the booksellers market that used to be located here. It is said that the minaret of the Koutoubia mosque is to Marrakech as the Eiffel Tower is to Paris. The minaret is visible from Gueliz which is connected to the Medina by Avenue Mohammed V. At night, the mosque is beautifully lit. It was completed under the reign of the Berber Almohad Caliph Yaqub al-Mansur (1184 to 1199), and has inspired other buildings such as the Giralda of Seville and the Hassan Tower of Rabat. Non-Muslims are not allowed inside.