The main shrine includes the sanctum and the three successive halls
in front of it upto the Bangaru Vakili. It consists of the:
* Snapana Mandapam, a square hall.
* Ramar Meda, a rectangular hall.
* Sayana Mandapam, also rectangular in shape, where the
Ekanta Seva is performed.
* Sanctum or Garba Griha, in which the idol of Lord Sri Venkateswara stands. In between the sanctum and the Sayana Mandapam, is the celebrated threshold, called the Kulasekhara-padi.
Source : http://www.tirumala.org
