The world famous Tirumala Temple is found in the hill town of Tirumala in Tirupati. Tirupati is well-known for Sri Venkateswara Swamy temple dedicated to Lord Venkateswara.
Tiru means ‘Holy’ and mala means ‘hills’ in Dravidian language. Therefore it translates as Holy Mountains.
The Tirumala Hill is 853m above sea level and is about 10.33 square miles 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, Vrushabhadri, Narayanadri, and Venkatadri. The temple is on Venkatadri 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 identified by other names: Balaji, Govinda, and Srinivasa.
The temple is the richest pilgrimage center, after the Sree Padmanabhaswamy Temple in Thiruvananthapuram. The temple draws about 50,000 to 100,000 pilgrims daily, 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.
There are several legends associated with the sign of the Lord in Tirumala. According to one legend, the temple has a murti of Lord Venkateswara, which it is believed shall remain here for the entire time of the present Kali Yuga.

Mantralayam is located in Kurnool district of Andhra Pradesh. It has many tourist amenities for pilgrims to stay. It is situated on the banks of river Thungabadhra.
Mantralayam, famed as a holy place by virtue of the Samadhi of a famous saint Raghavendra Teertha, is a sought spiritual location among Vaishnavites. Mantralayam, in the border of the states Karnataka and Andhra-Pradesh, is a calm and tiny hamlet in Andhra Pradesh. It is preferably placed in a secluded environment on the banks of the River Tungabhadra.
The followers believe that the saint was the incarnation of Bhakta Prahlada, an epic character and an ardent Vishnu devotee. The epics describe the story of Prahlada, who was saved by Lord Vishnu many times, with great fervor. It is taught that finally Lord Vishnu took his form as Narasimha to kill Prahlada’s father and to save him from the control of evil forces.
Visiting times of Raghavendra Swamy temple is from 6 to 8 am, 10 am to 2 pm and 4 to 8 pm on all the days. In special occasions, temple deity is taken round the temple on an decorated chariot. Temple elephants paying worship to the deity can also be observed. There are three chariots to carry the lord, gold, silver and wooden.

Sri kala hasti Temple is situated in the town of Srikalahasti, in the state of Andhra Pradesh. It is one of the most famous Shiva temples in South India, and is said to be the place where Kannappa was ready to offer both his eyes to cover blood flowing from the Siva linga before the Lord Siva stopped him and granted him mukti.
Sri Kalahasti temple is famous for its Vayu linga, one of the Panchabhoota Sthalams, representing breeze. The inner temple was formed around 5th century and the outer temple was constructed in the 12th century by the Chola kings and the Vijayanagara kings. Vayu is incarnated as Lord Shiva and worshiped as Kalahasteeswara.
The temple is also related with Rahu and Kethu The River Suvarnamukhi takes the northerly course at Sri Kalahasthi almost washing the west wall of the famous temple. Inside this very big temple, situated between two steep hills Sripuram and Mummidi-cholapuram, is the Sivalinga set to represent the constituent of Vayu.