Basilica of Santa Maria Assunta

Aquileia Basilica: mosaics above a Roman city

The Basilica di Santa Maria Assunta in Aquileia stands where Roman urban history and the expansion of early Christianity meet. Its vast fourth-century mosaic pavement is the immediate attraction, but the complex also preserves layers of rebuilding, worship and archaeology extending through the medieval period. Together with the surrounding Roman city, the Patriarchal Basilica was inscribed by UNESCO in 1998.

From imperial port to Christian centre

Aquileia was founded as a Roman colony in 181 BCE and became one of the early empire’s largest and wealthiest cities, linking Mediterranean trade with Central Europe. It was sacked by Attila’s Huns in 452, yet much of the ancient city survives unexcavated beneath fields and the modern settlement. The basilica’s position inside this archaeological reserve makes it possible to connect Christian art with the streets, port installations and houses of the Roman centre.

The celebrated floor belongs to the Theodorian complex created at the beginning of the fourth century. Its mosaic scenes include animals, portraits, geometric patterns and Christian imagery spread across an extraordinary surface. The present church reflects later construction: UNESCO notes an early-Christian origin, medieval rebuilding between the eleventh and fourteenth centuries and Romanesque forms with Gothic changes after an earthquake.

What the combined visit includes

The standard basilical-complex ticket provides more than entry to the main nave. The official visitor service includes the present basilica and its fourth-century mosaics, the ninth-century frescoed crypt, the northern Theodorian mosaic hall known as the Crypt of Excavations, the baptistery and Südhalle, the episcopal palace/domus area and the Domus of Titus Macro. These spaces reveal successive ground levels and help explain why the site cannot be understood from the nave alone.

Look carefully at the contrast between the low archaeological remains and the soaring medieval interior. The bell tower and Capitolo square provide orientation, while nearby Roman areas—including the forum and river port—extend the visit into the larger UNESCO property. Some state-managed archaeological zones are free, but their schedules differ from the basilica.

Current 2026 hours and admission

From April through September, the foundation lists the basilica Monday–Friday 10:00–19:00, Saturday 10:00–18:00, and Sunday or religious holidays 12:00–19:00. March and October have shorter closing times, and winter hours are reduced further. Ticket offices close 15 minutes before the basilica. Worship, ceremonies and special events can affect tourist access.

Since 1 January 2026, the full-price combined ticket for the basilical complex and Domus of Titus Macro is €12; the published group rate for at least 15 paying visitors is €9, and under-18s are among the categories admitted free. Eligibility and temporary exhibition charges should be checked on the official site. Groups of seven or more must use radio-guide systems, and advance arrangements are required for organised visits.

Planning a complete Aquileia visit

Allow 90 minutes to two hours for the basilical complex and at least half a day if adding the archaeological museum, forum, cemetery and river port. The mosaic pavement rewards slow viewing; binoculars are unnecessary, but a floor plan or guided explanation makes the imagery far more legible. Modest dress and quiet behaviour are appropriate because the basilica remains an active church.

Aquileia’s power lies in continuity. The floor beneath the visitor belongs to the moment when Christianity was becoming monumental, while the later church records the long reach of the Patriarchate, which survived until 1751. Combining the mosaics with the Roman ruins outside turns a beautiful interior into a much larger story about trade, faith and the transformation of Europe.

• UNESCO inscription: 1998, criteria (iii), (iv) and (vi).

• Apr–Sep hours: Mon–Fri 10:00–19:00; Sat 10:00–18:00; Sun/holidays 12:00–19:00.

• 2026 combined ticket: €12 adult; published concessions apply.

• Essential sights: mosaic floor, frescoed crypt and Crypt of Excavations.

• Visitor note: check liturgical closures and arrive before the ticket office’s early closing.