The church was built over the 7th-century church of Santa Maria della Scala and the older hypogeum of San Leucio.
The bronze door contains 32 panels representing New Testament scenes and various mythological creatures.
The bell tower contains an archway at its base that originally served as a pedestrian thoroughfare for the city.
The structure is built almost entirely from locally quarried calcarenite, known for its pale, light-reflecting properties.
The original church foundations were excavated from an ancient Roman port site.
The Cathedral Basilica of the Assumption of Mary in Trani is a premier example of Apulian Romanesque architecture constructed from local Trani stone. Building began in 1099 CE over the remains of an earlier church, reaching completion in the 13th century. The structure sits on an elevated podium overlooking the Adriatic Sea, emphasizing its stark white limestone facade against the blue water. Its interior features three distinct levels: the upper basilica, the crypt of San Nicola il Pellegrino, and the hypogeum of San Leucio. The exterior features a prominent 59-meter tall bell tower built between the 13th and 14th centuries. The bronze main doors are a 12th-century masterpiece created by Barisano da Trani. The cathedral holds the relics of Saint Nicholas the Pilgrim, a patron saint of the city.
The elevated viewing area near the harbor breakwater, providing a side-profile shot of the cathedral tower and the sea.
Visit the lower crypt levels to see the distinct difference in architectural eras and atmospheric lighting.
Walk the perimeter of the building to view the intricate carvings on the exterior walls facing the sea.
Check for occasional classical music concerts often hosted in the high-ceilinged nave.
Do not attempt to enter during mass or funeral services, as the interior is cordoned off for worshippers.
Shoulders and knees must be covered; maintain silence out of respect for active liturgical services.