Last year Sheffield F.C. tried to raise money to enable them to go back to the ground where the first game of modern day football took place at Olive Grove in Sheffield, close to the original ground of Sheffield Wednesday. I went along to take a picture which you can see here.
I am not sure how Sheffield F.C. went on with raising capital for the first stage of their move back to Olive grove? and how this move is progressing?
Now Sheffield are talking about trying to make this ground a world heritage site, make you own verdict on whether this is practical or a pie in the sky, these are the current list of UK and oversees Unesco sites, en.wikipedia.org/wiki/List_of_World_Heritage_Sites_in_the_United_Kingdom_and_the_British_Overseas_Territories#List_of_sites
All the best