(map) 
One of our favorite churches in all of Italy is The Basilica of San Flaviano on the outskirts of Montefiascone, on the road to Lake Bolsena.
A rich blend of both Romanesque and Gothic Architecture, it dates back as far as 1032. This architectural jewel was built from two superimposed Montefiascone churches, and contains the well-preserved fresco of San Flaviano, riding a white horse and holding a flag with a cross. 
During the following centuries after its construction, numerous frescoes were added, attributed to the school of Perugino and Pastoro, a Giotto-like fresco dating to the fourteenth century, as well as frescoes dating to the fifteenth and sixteenth centuries. Many on the walls are very well preserved.
Today’s entrance is to the lower church, which has three naves divided by columns with fantastic medieval capitals. While walking down stairs at the back of the church, one will arrive at an impressive ancient Roman nave.
Also visible is the tomb of the famous drinker Bishop De Fuger. who died leaving ten thousand gold coins in charity so that he would be remembered on the anniversary of his death by pouring wine over his tomb. The tassels of the pillow on his tomb are in the form of goblets.
– Contributed by Evanne Brandon Diner (see bio), chronicler of local village life in Northern Lazio, and property restoration and purchasing consultant. www.lavventuraitalia.com
Another unknown jem. The frescos remind me of the ones in Assisi also attributed to the school of Giotto.
Good morning Italian Notebook. Sigh, another wonderful post – is there anything more magical than walking into these exquisite churches in Rome? There is a breathtaking room in the church at the top of Michaelangelo’s hill in Florence – it’s a small, square room off of the right side of the church with benches all around the perimeter so that one may sit and gaze at the painted ceilings and surrounding walls. Ciao, Bella!
The frescos are great, but that tassels story is priceless!
I love this! Something I don’t know about for my next trip to Rome. And just when it seems like there is no such thing as the “undiscovered” in Italy.
This church is not in Rome, but about an hour or so North. See map. It’s worth a special trip. Enjoy