what are the type of rocks used to build the agra fort , gate way of india,lotus temple , qutub minar , india gate and jama masjid

Question

Read each one carefully:

http://en.wikipedia.org/wiki/Agra_Fort

http://en.wikipedia.org/wiki/Gateway_of_India

http://en.wikipedia.org/wiki/Lotus_Temple

http://en.wikipedia.org/wiki/Qutub_minar

http://en.wikipedia.org/wiki/India_Gate

http://en.wikipedia.org/wiki/Jama_Masjid
Choose the one you mean.

Answer 1

Which is used to minerals
Agra fort