Chandragiri was under the rule of Yadavaraya for about three centuries and came under the control of the Vijayanagarayadava rulers in 1367. It came into prominence during 1560s during the reign of Saluva Narasimha Deva Raya. Later, the most famous Vijayanagara emperor Srikrishna Devaraya, was kept in this fort as a prince, till his coronation at Penukonda. It is also said that he met his future queen Chinna Devi at this fort. Chandragiri was the 4th capital of Vijayanagara Empire,
Rayas shifted their capital to here when the Golconda sultans attacked Penukonda. In 1646 the fort was annexed to the
Golkonda territory and subsequently came under
Kingdom of Mysore rule. It went into oblivion from 1792 onward.The Raja Mahal Palace is now an archaeological museum. The palace is an example of
Indo-Sarcen architecture of
Vijayanagara period.
The crowning towers represents the Hindu architectural elements. The palace was constructed using stone, brick, lime mortar and devoid of timber.Some of important kavyas or epic poems are written in this fort under the patronage of Vijayanagara kings. Inside the fort are eight temples, Raja Mahal, Rani Mahal and other ruined structures. Inside the fort are Raja Mahal and Rani Mahal which are quite well maintained for more than 300 years and Raja Mahal is converted as Archeological Museum by Arechological Survey of India. The museum holds models of fort, main temple and other structures of surrounding area. Both of these building were constructed without using wood and only lime, brick and morter was used. Rani Mahal has flat roof and at base level it has stable and epigraphical evidence says that this building was also used as commanders quarters.
The fort is the place where the pact of granting lands for Fort St. George to the British was signed by Vijayanagara King Sri Rangaraya during August 1639.