The Tirumala Hill is 3,200 feet (980 m) above sea level and is about 10.33 square miles (27 km2) in area. It comprises seven peaks, representing the seven heads of Adisesha, thus earning the name Seshachalam. The seven peaks are called Seshadri, Neeladri, Garudadri, Anjanadri, Vrushabadri, Narayanadri, and Venkatadri. The temple is on Venkatadri (also known as Venkatachala or Venkata Hill), the seventh peak, and is also known as the "Temple of Seven Hills". The presiding deity of the temple is Lord Venkateswara, a form of the Hindu god Vishnu. Venkateswara is known by other names: Balaji, Govinda, and Srinivasa.
The temple is the richest pilgrimage center, after the Padmanabhaswamy Temple in Kerala, of any faith (at more than INR 50,000 crore) and the most-visited place of worship in the world. The temple is visited by about 50,000 to 100,000 pilgrims daily (30 to 40 million people annually on average), while on special occasions and festivals, like the annual Brahmotsavam, the number of pilgrims shoots up to 500,000, making it the most-visited holy place in the world.
The seven hills, also called Saptagiri, represent the Saptarishi (seven sages). They sometimes called the Sapathagiri. Hence the Lord is named Saptagirinivasa. The following are the seven hills: