The church was constructed over the tomb of the martyr Saint Flavian, a Roman prefect converted to Christianity.
The famous tomb of Johannes Defuk, the German bishop whose servant reportedly wrote 'Est! Est!! Est!!!' on tavern doors to denote excellent wine, is located inside.
The architecture is unique because the lower church features a 12th-century Gothic-style rose window that illuminates the interior despite being below ground level.
It is a double-church structure, a specific architectural choice designed to accommodate pilgrims traveling the ancient routes toward Rome.
The frescoes on the main altar area date back to the late 1300s and are attributed to local schools influenced by the Viterbo artistic tradition.
The Basilica of Saint Flavian is a rare 11th-century Romanesque structure built on two levels, featuring an unusual design where the apse of the lower church is positioned at the opposite end of the upper church. It serves as the burial site of Fugger, a German nobleman who died from consuming too much Est! Est!! Est!!! wine, a local legend immortalized by the inscription on his tombstone. The interior preserves significant 14th-century frescoes depicting the life of Saint Flavian and various biblical scenes. Built over an older paleochristian structure, the basilica incorporates reused Roman materials into its masonry. The lower church, or crypt, functions as a distinct space with its own altar and architectural integrity. It remains one of the most significant pilgrimage stops along the Via Francigena in the Viterbo province.
The view of the double-arched loggia from the front courtyard, which perfectly captures the Romanesque symmetry.
The church is located down the hill from the main town center, so factor in a 10-15 minute walk back uphill.
Check for local volunteer guides at the entrance, as they can provide access to historical notes often not found on signage.
Visit the lower level crypt carefully, as the floor levels and ceiling heights are irregular due to the ancient construction.
Do not attempt to park directly in front of the entrance, as the street is narrow and intended for pedestrian traffic.
Occasionally closed for private religious services or local festivals; check for signage at the entrance during winter months.
Maintain a quiet, respectful demeanor; ensure shoulders and knees are covered as this is a consecrated site.
