Aquileia, one of the richest cities of the Roman Empire, was an important commercial centre. The entrance to the city is announced by the imposing bell tower, 70 meters high, of the Basilica of Santa Maria Assunta, an archaeological site of world importance and UNESCO World Heritage Site since 1998. Inside the church there are mosaics that, with an extension of 760 m², are the largest and oldest in the Christian world. Don’t miss the archaeological walk, the Via Sacra of the river port, the National Archaeological Museum and the Roman forum.