Udayagiri is a town in Udayigiri Mandal in the Nellore district of the state of Andhra Pradesh in India. This Town was under the administer of Vijayanagara Kingdom under Ravella Nayaks as its rulers. This town was very much sustained and created by Ravella rulers. First known history of the city was from fourteenth century. It was the capital of neighborhood kingdom of Langula Gajapati, chieftain to Gajapatis of Odisha. It went under administer of Krishna Deva Raya of Vijayanagara around 1512. The Udayagiri fortress, developed by Langula Gajapati was difficult to reach on generally sides.
It could be just infiltrated just by a wilderness track in the east side and a pathway on the west side. The attack by Krishna Deva Raya went on for year and a half and brought about annihilation for Prataparudra Deva of the Gajapatis. Amid the rule of Gajapatis and the Vijayanagara Empire, the post was broadened. The whole city and the encompassing slope of 1000 feet stature were circled with dividers. The post comprised of thirteen structures, with eight of them on the slope and five beneath. It additionally comprised of a few excellent sanctuaries and patio nurseries. You can come and explore this place.