On the right bank of the Jumna, once the capital of the Mogul empire and the centre of the Mohammedan power in India; it is a great centre of trade, and is situated in the heart of India; it contains the famous palace of Shah Jahan, and the Jama Masjid, which occupies the heart of the city, and is the largest and finest mosque in India, which owes its origin to Shah Jahan; it is walled, is 51 m. in circumference, and divided into Hindu, Mohammedan, and European quarters; it was captured by Lord Lake in 1803, and during the Mutiny by the Sepoys, but after a siege of seven days retaken in 1857.