In this baptismal font, on February 2, 1650, Pier Francesco Orsini received baptism, who became Pope in 1724 with the name of Benedict XIII.

The Cathedral of Santa Maria Assunta – built by the Normans in 11th-12th centuries - is one of the most important monuments of Gravina.
Destroyed by fires and earthquakes in the mid-15th century, it was refurbished in Renessaince - Romanesque style.
It houses a splendid reliquary of an arm of the English saint Thomas Becket (1119-1170).
In August 1993 Pope John Paul II granted Gravina Cathedral the status of a minor basilica.