Can an iron structure stand tall for 1,600 years ... Yet, inside New Delhi’s UNESCO-listed Qutb Minar complex – a collection of historic monuments and buildings built in the early 13th century ...

The well-known iron pillar near the Kutub Minar, Delhi, and the rectangular iron beams of the temple at Puri, to which the dates 640 A.D.–1174 A.D. have been ascribed, are cited as examples of ...