When we arrived at the Pantheon, it was closed. It had been closed for some time and was not due to re-open until the day after we were there in 1998. We had gotten up at the crack of dawn, walked down a mountain, caught a bus to Formia Station and spent an hour on the train then walked and walked and walked some more, only to be disappointed to find the monument closed.
I guess the best way to avoid that kind of disappointment would be to phone ahead and check.
Unique Suggestions: On the good side of this experience was that the time that we had set aside to actually see inside the Pantheon was put to use by travelling on to the Trevi Fountain (which was in the original plan), and then onto the Spanish Steps which we had been going to leave until another day.
Fun Alternatives: If you found yourself in this predicament you could also walk back the other way to Campidoglio and the museums on the hill.
Other interesting information may be found on this link:-
The Savoia royal family were exiled from Italy after the proclamation of the 1st Republic in which the country voted against the monarchy. The male heirs were forbidden from entering Italy. Until now. In this photo is monarchist who volunteer for this duty. Volunteers stands as an honor guard at the tombs of the Italian kings and queens inside the pantheon.
Pay careful attention to the Guest Book. Many tourists may be deceived in thinking that they are signing a Guest Book to state your visit to the Monument. But the monarchy party has placed a person (dressed in official looking uniform) next to the Guest Book for you to unwittingly and be deceived to sign and give support to the Savoia family. Politics in church?! In 1946, the Italians voted for a Repubblic and sent the Savoia into exile. The Savoia lost favour with their Italian subjects for several good reasons. a) It was Victor Emmanuel III who actually asked Mussolini to form a government. b) The anti-semitic laws issued by Mussolini government were signed by the king. c) Instead of supporting his subjects, the king abandoned Rome to the Germans and fled Italy.
Unique Suggestions: Do not sign Guest Book in Pantheon!!!