Rajgir, which means 'house of the king', was the ancient capital city of the Magadha kings until the 5th century BC when Ajatsatru moved the capital to Pataliputra. Forty-six km from Bodhgaya, the town is sacred to the memory of the founders of both Buddhism and Jainism and houses historical remains like the cyclopean wall and marks engraved in rocks.

Rajgir is an important Buddhist pilgrimage site since the Buddha spent 12 years here, and the first Buddhist council after the Buddha was hosted here at the Saptaparni caves. Lord Buddha often went into retreat at the Jivkamaravana monastery in a beautiful orchard. One of his most devoted and prosperous devotees, surgeon Jivaka also lived here. The rich merchant community here soon became the Buddha's followers and built many structures of typical Buddhist architecture.

Lord Buddha converted the Mauryan king Bimbisara, one of his most celebrated followers, to Buddhism at the Griddhakuta hill, where he delivered many of his sermons as well.  The Japanese have built a Stupa on top of the Ratnagiri hill, linked by a rope way. It was here that the teachings of Buddha were penned down for the first time.

Rajgir is also an important place of pilgrimage for the Hindus and Jains. Other places to be visited are Bimbisara ka jail, Jarasandha ka akhara, Venuvana, Karand tank, Maniyar math, Swamabhandar cave, Pippala cave, Viswa Shanti Stupa, the famous hot water springs and ruins of an old fort.