The Bara Imambara of Lucknow is one of the most famous monuments of the city. Also known as Asfi Imambara, after the name of the Nawab of Lucknow who got it constructed, it is an important place of worship for the Muslims who come here every year to celebrate the religious festival of Muharram. The Imambara is primarily known for its incredible maze, known as Bhul Bhulaiya locally, which is located on the upper floor of the monument