The cathedral contains a baptismal font dating back to 1629 created by Pietro Paolo Jacometti.
The crypt houses a high-relief marble statue of the Madonna and Child attributed to the school of Agostino di Duccio.
The building was constructed using travertine and local stone, incorporating salvaged materials from Roman-era structures in Osimo.
It is dedicated to Saint Leopardus, the first bishop of Osimo who allegedly brought Christianity to the region in the 5th century.
The external bell tower was built using repurposed stones from the ancient city walls, evident in the visible Roman masonry at its base.
The Concattedrale di San Leopardo, also known as the Osimo Cathedral, is a Romanesque-Gothic structure built primarily between the 12th and 13th centuries atop an earlier 8th-century basilica. Its distinctive bell tower, finished in the 13th century, stands separately from the main structure and serves as a landmark for the hilltop town of Osimo. The façade features a prominent rose window and a portal decorated with Romanesque reliefs. The interior layout follows a Latin cross plan with three naves separated by cruciform pillars. Below the cathedral lies the Crypt of San Leopardo, which houses the remains of the patron saint of the city. Notable artistic elements include a 15th-century baptismal font and various fragments of ancient sculptures embedded within the masonry. The complex sits on the site of the former Roman acropolis, integrating remnants of ancient walls into its foundation. It underwent significant structural modifications in the 15th century, transitioning parts of its aesthetic toward the Gothic style.
The base of the bell tower looking upward or from the nearby park terrace for a full view of the cathedral exterior.
Visit the underground crypt first, as it contains the most significant historical and artistic artifacts of the site.
Take time to examine the exterior masonry to spot re-used Roman-era stones and inscriptions embedded in the walls.
Explore the adjacent Diocesan Museum if available, as it holds liturgical treasures associated with the cathedral.
Do not overlook the lower level; many visitors miss the crypt, which is the most architecturally and historically significant part of the complex.
May have limited access during scheduled religious services or local feast days.
Maintain a quiet volume and ensure shoulders and knees are covered as this is an active place of worship.
