Remains of a Roman temple in a cathedral

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The Terracina Cathedral in Italy was constructed between the 5th-6th centuries, utilizing the remnants of a five-nave Roman temple situated within the city's forum area. Over time, the building underwent numerous transformations and restorations, with notable changes occurring during the 11th century as it shifted from being dedicated to Saint Peter to Terracina's patron saint Caesarius in 1074. Further modifications took place in the 13th century, but the most significant alteration came in the 18th century when a radical restoration transformed the cathedral into a Baroque-style structure by reducing its five naves to three and constructing side chapels while covering the original A-framed Romanesque ceiling with barrel vaulting. The Terracina Cathedral served as the site of the pivotal Papal conclave in 1088 that resulted in the election of Pope Urban II. This 3D model showcases a Roman column and marble facing slabs, which serve as evidence of the cathedral's connection to a temple possibly dedicated to Rome and Augustus.