UNESCO Basilica
Patriarchal Basilica & the Mosaic Floor
Aquileia · Friuli-Venezia Giulia
QUICK INFORMATION
- CATEGORY
- UNESCO Basilica
- COUNTRY
- Italy
- REGION
- Aquileia · Friuli-Venezia Giulia
- DURATION
- 1 day
ABOUT THIS ATTRACTION
The patriarchal basilica is Aquileia — a Romanesque church of severe striped brick and stone, raised between the 11th and 14th centuries over a 4th-century predecessor, whose whole floor is a window into the earliest age of Christianity. You walk a glass-and-steel walkway a metre above a mosaic carpet that once covered the entire Theodorian hall: Jonahaswallowed by the sea monster, the fisherman with his catch, the cock fighting the tortoise (light against darkness), a sea full of octopus and ducks from the Adriatic a few miles away, and the portrait roundels of the local families who funded the building — among them, possibly, the family of Constantine the Great.
HISTORY & BACKGROUND
The story behind it
The first basilica was raised immediately after Constantine ended the persecutions, by Bishop Theodorus, on a mosaic floor laid around 314 AD — the oldest surviving large-scale Christian mosaic anywhere. Theodorus’s hall was itself the fourth church on the site; the present Romanesque building rose after an earthquake in 988 and was embellished in the Gothic age. When Attila burned Aquileia in 452 the fire damaged the basilica but the floor, buried under later paving, survived intact — its columns still show scorch marks. The 12th-century fresco cycle in the crypt below the apse tells the lives of Saint Mark and Saint Hermagoras, the city’s first bishop and martyr.
WHAT TO SEE
What to see here
The 760 m² mosaic floor — Jonah, the fishermen, the cock-and-tortoise, the donor portraits.
The Crypt of the Frescoes — vivid 12th-century murals of Saints Mark and Hermagoras.
The Crypt of the Excavations — the Theodorian church below, with more mosaics and a Roman villa.
The bell tower climb for the view over the ruins and the Friulian plain toward the Alps.
WHY IT MATTERS
Why it matters
This is the single most important early-Christian monument in the western Roman world — the floor that made Aquileia the mother church of the Adriatic and the springboard from which Christianity spread into central Europe.
PRACTICAL INFORMATION
Before you go
MAP & LOCATION
Patriarchal Basilica & the Mosaic Floor
Patriarchal Basilica & the Mosaic Floor, Aquileia, Friuli-Venezia Giulia, Italy
45.7696, 13.3721
MORE ATTRACTIONS
More to see in Aquileia
THINGS TO DO
Things to do nearby
FOOD & DRINK
Where to eat nearby
Ristorante Ai Gladiatori — the classic, beside the museum: river fish and Friulian classics
Locanda dei Longobardi — family trattoria a few steps from the basilica
Enoteca AliJba — wine bar on the square for aperitivo with Collio glasses
HOTELS & STAYS
Where to stay nearby
Village guesthouses and B&Bs around the basilica square
Camping: the municipal camper stop beside the excavations (€10, all year) or the Grado lagoon campsites — Tenuta Primero and Marina Julia — 15 minutes away with direct cycle-path links
ITINERARIES
Day-by-day routes
NEARBY DESTINATIONS
Continue the journey
PART OF
Keep exploring
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