Iron Pillar and Qutub Minar, New Delhi
The iron pillar is 7.2 m tall and weighs 6,000 kg. The iron pillar is really old, dates around the fourth century or even earlier. Even though it is kept in open air, it does not rust. Qutub Minar is a minaret built in the twelfth and thirteenth centuries. Qutub Minar is 73 m tall.