Istanbul is known as the City on the Seven Hills (Turkish: Yedi tepeli şehir). This denomination is a heritage from Byzantine Constantinople where the city model of Rome were inherited and the Istanbul were also built on seven hills at the Byzantine period as being the East Rome.
The seven hills, all located in the area within the city walls and each hill was surmounted by monumental religious buildings (churches under the Byzantines, imperial mosques under the Ottomans).
The first hill on which the ancient city of Byzantium was founded, begins from Seraglio Point and extends over the whole area containing Hagia Sophia, the Sultan Ahmed Mosque and Topkapı Palace.
On the second hill are to be found the Nuruosmaniye Mosque, Grand Bazaar and Column of Constantine.
Bayezid II Mosque
At the third hill, there are Istanbul University, the Bayezid II Mosque to the south and the Süleymaniye Mosque to the north.
Church of the Holy Apostles
The fourth hill on which stood the Church of the Holy Apostles and, subsequently, the Fatih Mosque.
Mosque of Yavuz Sultan Selim
On the fifth hill is the Mosque of Yavuz Sultan Selim.
Edirnekapı and Ayvansaray Neighborhoods
On the sixth hill is the Edirnekapı and Ayvansaray neighborhoods.
Byzantine times as the Xērolophos
The seventh hill is the Kocamustafapaşa neighborhood, known in Byzantine times as the Xērolophos (Greek: ξηρόλοφος), or "dry hill," it extends from Aksaray to the Theodosian Walls and the Marmara. This region is a triangle with apices at Topkapı, Aksaray, and Yedikule.