Archaeologica.org

https://www.rawstory.com/colosseum-s-un ... splendour/

Colosseum's underground labyrinth restored to eerie splendour

I doubt they could ever recapture the stench but the plan progresses.

Difficult to see the point. Perhaps the money could be better spent researching what it was actually for ie what actually was it used for most of the time - Mary Beard and others have worked out that it was not used for games for much of its existence

Tourism.

Money talks, Simon.

Quite. A background for selfies nothing more

Bingo. Why buy a t-shirt when you can take a photo of yourself there!