tirumala Hills are part of Seshachalam Hills range. The hills are 853 metres (2,799 ft) above sea level. The Hills comprises seven peaks, representing the seven heads of Adisesha. The temple lies on the seventh peak Venkatadri, on the southern banks of Sri Swami Pushkarini, a holy water tank. Hence the temple is also referred to as "Temple of Seven Hills". tirumala town covers about 10.33 sq mi in area.
The temple is constructed in Dravidian architecture and is believed to be constructed over a period of time starting from 300 AD. The Garbagruha (Sanctum Sanctorum) is called AnandaNilayam. The presiding deity, Venkateswara, is in standing posture and faces east in Garbha gruha. The temple follows Vaikhanasa Agama tradition of worship. The temple is one of the eight vishnu Swayambhu Kshetras and is listed as 106th and the last earthly divya Desam. The temple premises had two modern Queue complex buildings to organise the pilgrim rush, Tarigonda Vengamamba Annaprasadam complex for free meals to Pilgrims, hair tonsure buildings and a number of pilgrim lodging sites.
It is the richest temple in the world in terms of donations received and wealth. 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.