Riyadh is divided into fifteen branch municipalities, in addition to the Diplomatic Quarter. Each branch municipality in turn contains several districts, amounting to over 130 in total, though some districts are divided between more than one branch municipality. The branch municipalities are Al-Shemaysi, Irqah, Al-Ma'athar, Al-Olayya, Al-Aziziyya, Al-Malaz, Al-Selayy, Nemar, Al-Neseem, Al-Shifa, Al-'Urayja, Al-Bat'ha, Al-Ha'ir, Al-Rawdha, and Al-Shimal ("the North"). Olaya District is the commercial heart of the city, with accommodation, entertainment, dining and shopping options. The Kingdom Center, Al Faisalyah and Al-Tahlya Street are the area's most prominent landmarks. The centre of the city, Al-Bathaa and Al-Dir'iyyah, is also its oldest part.