Mosaics on floor.
You walk through the exhibit on special raised walkways made of perspex suspended on scaffolding. There are also steel steps.
Side chamber of the basilica.
Photo of the construction of the roof.
Roof and wall detail.
It all really impressed me.
You had to be tall to even know this fresco was there. It was hidden from general view.
A wow experience. Here you can see a walkway.