Firozabad : The Fifth City of Delhi (1351–1388)

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The fifth city of Delhi was built by Feroz Shah Tughlaq (1351-1388 AD), who was known for his construction sprees and is credited with building of many civic amenities all over the city. He was not merely building a fortress but a whole new city on the banks of the Yamuna called Firozabad. On the top of his palace, Firoze planted Ashoka pillar which is around 1500 years old