About value..Thats a way too static way of looking at life. It's the typical subject where 1% of the population think that and the rest don't care and would agree with anything...
But if you really think about it most nice monuments visited by tourists in any city, like churches, temples are actually buildinga mostly well restored and currently used in some way.
Colosseum is just a bunch of ugly ruins. Visiting Colosseum was one the most underwhelming experience of my life and I've travelled quite a bit. just build something nice Instead
Which is a long way of saying "You think it has low value as it stands, and high value as something else, but you don't have the wallet to buy it from the guys currently holding it" which is a long way of saying "People's tastes differ and you're in the minority".