Kumrahar is the site of the ancient city of Patliputra. An important finding is the 80 pillared huge halll of the Mauryan dynasty. A thousand years of political glory - 600 BC to 600 AD and then again, 16th century onwards can be seen in the archaeological findings. Very little of this grandeur remains though, except the reminants of a huge Mauryan hall supported by 80 sandstone pillars dating back to 400 - 300 BC.