Red Fort Delhi. the largest of Old Delhi's monuments is Lal Quila or Red Fort whose thick red sandstone walls, bulging with turrets and bastions, have withstood the vagaries of time and nature. The Lal Quila rises above a wide dry moat in the northeast corner of the original city of Shahjahanabad. Its walls extend from two kilometers and vary in height from 18 metres on the river side to 33 metres on the city side. Mughal Emperor Shahjahan started construction of the massive fort in 1638 and work was completed in 1648. The fort contains all the expected trappings of the centre of Mughal government: halls of public and private audience, domed and arched marble palaces, plush private apartments, a mosque and elaborately designed gardens. Even today, the fort remains an impressive testimony to Mughal grandeur, despite being attacked by the Persian Emperor Nadir Shah in 1739 and by the British soldiers during the war of independence in 1857. Mughal Emperor Shahjahan started constru...