Bara Imambara and Bhool Bhulaiya
Hussainabad, Lucknow, Lucknow district
Nawab Asaf-ud-Daulas magnificent 1784 Imambara, one of the largest arched halls in the world built without iron beams. Houses the labyrinthine Bhool Bhulaiya maze of 1024 winding corridors at roof level, one of the most disorienting architectural experiences in India.