As we go to Tirumala, the 7 Hills have taken the shape of Lord Balaji’s face, these hills were brought from heaven and placed here at Tirumala.The seven hills in Tirupati, recognized as Saptagiri are believed to be the the abodes for various hindu gods. Adri means hill in sanskrit.
Seshadri – The abode of Sesha, servant of Lord Vishnu.
Neeladri – The hill abode of Neela Devi.
Garudadri – The hill of Garuda, which is the vehicle of Lord Vishnu.
Anjanadri – The abode of Lord Hanuman.
Vrishabhadri – The hill of Nandi, the vehicle of Lord Shiva.
Narayandri – The abode of Lord Vishnu.
Venkatadri – The hill abode of Lord Venkateswara.