Structure next to Qutub Minar

Image taken on 2009-01-23 23:38:48 by Swami Stream.

The Qutab Minar was built 400 A.D. and stands over 20 ft high. What was the next piece of IRON built that high?

The Qutab Minar was built 400 A.D. and stands over 20 ft high. What was the next piece of IRON built that high?
Okay here’s some more info. The next piece that large was built at least 1000 years later. But what was the next piece that big? And where is it? I really need to [...]