The imambara in Lucknow is popularly called the 'Bara Imambara' This majestic imambara built by Asaf-ud-Daula in 1784 is also called the 'Asafi Imambara'. The imambara is a shrine built by Shia Muslims to observe Azadari. Azadari is the mourning of Muharram which takes place in the first month of the Islamic Calendar.