The walled city of Harar in Ethiopia has a rich Islamic architectural heritage. It was influenced by neighboring Arab cultures and is considered the fourth most sacred Islamic city. Within its walls are over 90 mosques and the historic Al-Jami mosque. The city is divided into five quarters by gates, each historically headed by a Malak leader and further divided into neighborhoods organized around mosques. Notable buildings include residents' close-quarter homes built back-to-back around narrow lanes as well as the former home of poet Arthur Rimbaud.