By Srividya - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=50579770 Qutb Minar is an ancient monument built in 1193 by Qutab- ud- din Aibak during 1193 , it is located in Mehrauli in Delhi .Qutb Minar along with other monuments around it has been listed under the UNESCO world heritage sites. Qutb Minar is 73 meter tall tower and it is made out of Red sand stone