Vaishali district is a district in Bihar state, India. It is named after theVaishali (ancient city). The history of Vaishali district is thus very ancient, and finds mention in the Indian classic Mahabharata, as well as inBuddhist and Jain tradition. It is a part of the Tirhut Division (Tirhut).

 One of the famous Buddhists sites, Kesaria in the East Champaran district of Bihar is home to one of the most striking architectural remains of ancient India. Discovered in 1958 during an excavation led by Archaeologist KK Muhammed of Archaeological Survey of India (ASI). The stupa dates to between 200 AD and 750 AD.

The colossal Buddhist Stupa, excavated here in 1958 and 1998 by The Archaeological Survey of India (ASI), is hailed as the largest in the world.

With a height of 104 feet and circumference of almost 1400 feet, this imposing structure is larger than the Borobudur sputa in Indonesia. Located in a serene ambience, the Kesaria stupa is a testimony to the greatness of the ancient Buddhist architecture and stands out as a worthy emblem of a great religion. – See more at: http://www.incredibleindia.org

Nalanda (Nālandā; pronunciation: /nɑː.lən.ðɑː/; ) was an acclaimed Mahāvihāra, a large Buddhistmonastery in ancient Magadha (modern-day Bihar), India. The site is located about 95 kilometres southeast of Patna, and was a centre of learning from the fifth century CE to c. 1200 CE.Historians often characterize Nalanda as a university.

Nalanda flourished under the patronage of the Gupta Empire as well as emperors like Harsha and later, the rulers of the Pala Empire. At its peak, the school attracted scholars and students from as far away as Tibet, China, Korea, and Central Asia. It was very likely ransacked and destroyed by an army of the Muslim Mamluk Dynasty under Bakhtiyar Khilji in c. 1200 CE