Siri Fort

Siri Fort, in the city of New Delhi, was built during the rule of Ala-ud-Din Khalji, the Turkic (Afghan) ruler of the Delhi Sultanate, to defend the city from the onslaught of the Mongols.^[2][3][4] It was the second of the seven cities of medieval Delhi built around 1303 (stated to be the first entirely constructed by Turks), which at present is seen only in ruins with a few remnants (pictured)^[5][6]

• http://en.wikipedia.org/wiki/Siri Fort