Bara Imambara was built by munificent Nawab Asaf-ud-Daula in 1784 to provide employment and food to his famine stricken subjects. Even, the once-rich laboured during night to avoid being seen working. Pretentious decorations are no longer there but the grandeur of sheer dimension and daring techniques surpassed everything in the past architectural innovation. The large interior vaulted hail (162 feet long, 53 feet wide and 50 feet high) without a single beam to support is perhaps the world's largest masonry work of this kind, with unique acoustics. Just ouiside, a stair-case leads to Bhulbhulaiya, a labyrinth of intricate zigzag path where visitors are advised not to enter without guides. Within the compound of the Imambara complex and to its left stands a grand mosque. To its right is a row of cloisters concealing a huge well said to be fathomless. The munificent Nawab Asaf-ud-Daula and the grand architect-builder Kafayatullah lie at rest, side by side, inside the vaulted hail.