[5] 'The children's museum', the main entrance area, and an orientation theatre were the only parts opened to the public in August 2015.

[8] It was planned as a history museum for the state of Bihar,[9] and began construction in Bailey Road, Patna in October 2013 with an estimated budget of ₹498 crore (US$58 million).

In January 2012, following an international architectural competition, Japan-based Maki & Associates and its Indian partner OPOLIS, Mumbai were appointed as the primary consultant architect for the project.

Its exact location is on the southern flank of Jawaharlal Nehru Marg, Bailey Road, in Patna.

[9] The site of the proposed museum was earlier occupied by seven old bungalows between LN Mishra Institute and Hartali Mor in Bailey Road.

[22] Its collection of artefacts and exhibit items is divided into six domains: the Orientation Room, the Wildlife Sanctuary, the history sections on Chandragupta Maurya and Sher Shah Suri, the Arts and Culture section and the Discovery Room.

Among the exhibits are a simulated the Asian paradise flycatcher, the Indian giant flying squirrel, animals, birds, trees and plants native to the state of Bihar.

The gallery also houses fragments of railings from various ancient Stupas that are carved on with episodes from Buddha's and Mahavira’s life.

[29][30] In August 2023, cabinet of Bihar Government approved the construction of heritage tunnel at the revised cost of ₹ 542 crore.