The Pantheon

The Pantheon is now a Catholic Church, but began its life as the temple to all the gods which a statue of each in surrounding the structure inside. It is a massive dome of poured concrete hints at what Rome must have looked like in its peak and to the brilliance of its builders. There is a large opening the roof to let natural light in and the original brass and lead drainage for rain is still in use in the floor.

Raphael is entombed within as is the last king of Italy in the Savoy line--a controversial figure for Italians.
It has its original doors, polished marble and porphyry floors. Besides the Christian trappings it is much the way it was when it was built in Pagan Rome.