Agra Fort, is a monument, a UNESCO World Heritage site in Agra, Uttar Pradesh, India. It is about 2.5 km northwest of its more famous sister monument, the Taj Mahal. The fort can be more accurately described as a walled city. (built before 1080). Red Fort Agra by ~CitizenFresh
The Red Fort - Delhi, India : A 17th-century fort complex constructed in the walled city of Old Delhi that served as the residence/capital of the Mughal Emperors until 1857, when the then-current Mughal emperor was exiled by the British Indian government.