The Pontifical Basilica of Saint Anthony of Padua is a Roman Catholic church and minor basilica in Padua, northern Italy. Although the Basilica is visited as a place of pilgrimage by people from all over the world, it is not the titular cathedral of the city, a title belonging to the Cathedral-Basilica of St. Mary of Padua. The basilica is known locally as "il Santo". It is one of the eight international shrines recognized by the Holy See.
Sant'Antonio is a giant edifice without a precise architectural style. Over the centuries, it has grown under a variety of different influences as shown by the exterior details.
The new basilica was begun as a single-naved church, like that of St Francis of Assisi, with an apsidal chancel, broad transepts and two square nave bays roofed with hemispherical domes like that of San Marco, Venice. The exterior style is a mixing of mainly Romanesque and Byzantine elements, with some Gothic features.
Later in the 13th century, the aisles were added in a more Gothic style, the length of each nave bay being divided into two aisle bays with pointed arches and quadripartite vaults.
The eastern apse was also extended in the Gothic style, receiving a ribbed vault and nine radiating chapels in the French manner. Later also, the Treasury chapel was built in 1691 in the Baroque style by Filippo Parodi, a pupil of Bernini.
Externally, the brick facade has a Romanesque central section which was extended outwards when the aisles were built, acquiring in the process four deep Gothic recesses and an elegant arcaded balcony which stretches across the broad front of the building. The facade gable shows little differentiation between the nave and aisle, screening the very large buttresses that have the same profile and form a richly sculptural feature when the building is viewed from the side.
The domes, like the domes of St. Mark's Basilica, were raised in height externally, giving a Byzantine appearance to the building, while the multitude of small belfries which accompany the domes recall Turkish minarets. Externally, at the main roof line each section of the building is marked by a low gable decorated with blind arcading in brick. These gables combine with the domes, the broad buttresses and the little towers to create a massive sculptural form, both diverse and unified in its conglomeration of features. As a work of architecture the building is particularly effective when viewed from the north west, an extra dimension being added to the facade by the huge plinth and dynamic equestrian monument of the Condottiero Gattamelata by Donatello.