The city's most striking building is the Bara Imambara mausoleum, built as a famine-relief project in 1784 by Asaf-ud-Daula. It has one of the largest vaulted galleries in the world, an amazing labyrinth, a bottomless well and views over the city from the roof. Beside the Bara Imambara, and also built by Asaf-ud-Daula, is the imposing Rumi Darwaza, an impressive replica of an entrance gate built in Istanbul. Nearby is the Hussainabad Imambara, which was built in 1837 by Muhammed Ali Shah to serve as his own mausoleum. It contains small imitations of the Taj Mahal, and houses a silver throne, tacky chandeliers and various paraphernalia of state.
The city's most evocative remnant is the Residency. Built in 1800, it became the stage for the Siege of Lucknow, the most dramatic event of the 1857 Mutiny. A small British garrison, under the command of Sir Henry Lawrence, held out in the Residency for three months, only to be surrounded by mutineers again for a further two months after supposedly being relieved. Left exactly as it was at the time of the final relief, the group of buildings retain an eerie echo of battle: shattered walls scarred by cannon shot; musty cellars where many of the women and children sought refuge; and, outside, a cemetery holding the graves of over 2000 people, including that of the unfortunate Sir Henry.