I have nominated Panhala Fort situated near Kolhapur district of Maharashtra for the World Heritage Site. There are many reasons as to why one should visit the Panhala Fort. Have a look at the video which gives you some of the reasons to visit this fort.
https://www.youtube.com/watch?v=Uvm2dOekoIc
My GoUNESCO Experience –
https://www.youtube.com/watch?v=5O9k8K3GtS0&feature=youtu.be