The mosaics of Aquileia in the Basilica of Aquileia (Friuli-Venezia Giulia) are the largest and best preserved early Christian mosaic floor in the Western world: 760 square meters of 4th-century AD mosaic covering the nave and the side aisles of the basilica. Laid down around 313 to 319 AD under bishop Theodore, a few years after the Edict of Milan legalized Christianity in the Roman Empire, the mosaics of Aquileia are among the most important visual documents of early Christian art. The Basilica of Aquileia has been a UNESCO World Heritage Site since 1998. The number of international visitors is absurdly low compared to the importance of the site.
What the Mosaics of Aquileia Are
The mosaic floor of the Basilica of Aquileia was laid in two successive phases, both in the 4th century: the first cycle (the oldest part, still legible in the eastern sections of the church) was commissioned by bishop Theodore shortly after 313 AD. The second cycle (slightly later) covers the main nave and contains the narrative that made the mosaics of Aquileia famous in academic circles: the story of Jonah, swallowed by the sea monster, vomited onto the shore, resting under a gourd, in a narrative sequence of extraordinary pictorial quality, surrounded by fishing scenes, sea creatures, and portraits of donors identified by name. The symbolic reading is christological (Jonah as a prefiguration of the Resurrection of Christ) but the execution is fully classical in iconography and technique.
How to Visit the Mosaics of Aquileia
The Basilica of Aquileia is open every day with hours that change by season (check basilicadiaquileia.it). Entry to the crypt and the bell tower is paid (€4 to €6); the mosaic floor of the nave is visible from inside the church with a basilica entry ticket (€4) or for free during religious services. The mosaics of Aquileia are protected by raised walkways that let you walk above the nave without touching the floor, a setup that allows a close, high-quality view. The ticket also includes the excavation crypt (where the structures of the churches that predate the current basilica are visible below floor level) and access to the sacristy with additional mosaic fragments.
Questions About the Mosaics of Aquileia
How do you get to Aquileia?
By car from Udine: 35km, 30 minutes on the A23 motorway then the A4. From Trieste: 45km, 40 minutes. From Venice: 120km, 1h30. Aquileia sits on a local rail line (Cervignano del Friuli, Aquileia, Grado): from Cervignano del Friuli (connected to Venice and Trieste) the train to Aquileia takes 15 minutes. Aquileia station is 500m from the basilica.
How much time do you need in Aquileia?
The basilica and the mosaics of Aquileia: 1 hour. The National Archaeological Museum (with its collection of Roman antiquities: mosaics, sculptures, coins, glass): 1 hour. The Roman forum and the remains of the ancient port (walkable in the area): 30 minutes. The full visit to Aquileia: 3 hours. Combine Aquileia with Grado (the lagoon island town 11km away, with its own early Christian basilica and excellent seafood) and you have an excellent day on the Friuli coast.
Are the mosaics of Aquileia really that important?
Yes, and the importance is visible even without any historical background. The execution quality of the mosaics of Aquileia, the volumetric rendering of the figures, the chromatic range of the material, the storytelling of the scenes, is that of the best late-antique mosaicists, the same ones who decorated the imperial baths of Rome and the imperial palaces of Constantinople. The fact that this level of quality survived in a 4th-century provincial basilica, in exceptionally legible condition, is the result of geological conditions (the ground at Aquileia is extremely stable, no significant earthquake in the area for centuries) and intelligent conservation choices made over the centuries. It is no accident that it is UNESCO. It is an accident that it is not more famous.
A Bit of History on Aquileia
Aquileia was founded by the Romans in 181 BC as a military base for the campaigns toward Illyricum and Pannonia. It quickly became one of the main commercial centers of the Empire, the port on the northern Adriatic, the redistribution market for goods coming from the East toward Northern Europe. In the 1st and 2nd century AD it was the fourth largest city in the Roman West (after Rome, Milan, Capua) with a population estimated between 100,000 and 200,000. The episcopal see, among the oldest in the Christian world, probably founded by Saint Mark, answered to no one: the patriarch of Aquileia held jurisdiction over an enormous territory that included the Roman provinces of northeastern Italy, Pannonia, and Illyricum. The mosaics of Aquileia are therefore the product of one of the most important Christian sees of late antiquity, not of a marginal province. The decline followed the invasions of the Visigoths (401) and above all the Huns (452, when Attila partly destroyed the city): the city never fully recovered, and that lack of massive rebuilding paradoxically preserved the 4th-century structures. See also: Friuli · Trieste · visiting Italian churches.