On a related note: Ikea was planning to open a shop in the outskirts of Rome some 25 years ago. They had their store designed and just when they started digging foundations they found roman remains. The whole store had to be redesigned, raised one level and only then built. The process took 10 additional years, but now when you go to Ikea you can see some of the remains, including a roman road in the parking lot underneath.
http://ifg.uniurb.it/static/lavori-fine-corso-2012/grifoni/2...
And yes, it was kind of strange that Milan outran Rome in terms of subways.
On the other hand, Saint Petersburg is built on the swamp, and metro had to be 50+ meters deep and featured underground river flooding one of its tunnel for 10+ years. At least you're happy to have this place genuinely diggable.
Great, but I find the 3D map of modern Rome in Apple Maps better. Interactivity really adds to the experience.
> Wandering a bit we find more modern additions, post-excavation. One of the most beloved 20th century heads of the Vatican Library has been buried here, just below the now-restored old altar of the lower church. And the tomb of St. Cyril [or possiby it contains Cyril and his brother Methodius – there is debate] is here. They are the creators of the Glagolitic alphabet (ancestor of the Cyrillic), surrounded by plaques and donations and tokens of thanksgiving from many Slavic countries who use that alphabet.
(but sheesh... the site designer needs to fix those link styles.)