Iron Pillar is at Mehraulli,in New Delhi.
Some more information about Iron Pillar.
Iron Pillar is a proof of the skil of Indian craftsmen.It was constructed over 1,600 years ago,During the reign of Guptas.The Pillar is made of Iron.It is 7.2 metres high and weighs around 6.5 tonnes.It is known as"Rustless Wonder" because despite being exposed to the sun and rain for all these centuries,it has not rusted.