Ajatshatru Fort and Cyclopean Wall

Ajatshatru Fort refers to the scattered ruins of the fortifications King Ajatshatru raised around Rajgir in the 6th century BC, when the town served as capital of the Magadha kingdom. Part of this defense system survives as the Cyclopean Wall, a stretch of stacked stone construction built without mortar, stretching for a considerable distance around the old city's perimeter. Little of the fort itself remains intact, but the wall's scale and age make it one of the oldest surviving fortification works associated with any ancient Indian capital.