Aquileia features an extremely important archaeological area, which is a UNESCO World Heritage Site.
The wonderful Basilica of Santa Maria Assunta, which overlooks the historic Piazza Capitolo, was built over a fourth-century building, which in the following centuries was subjected to several extensions (mostly destroyed during the barbarian invasions). In the temple one can admire the famous early Christian mosaics (4th century) which are a milestone in the history of Italian art.
