RESTORATION
The eastern entrance arch of the temple, known as the Camigliano Archwas discovered in 1969 within the shops of a building on the corner of Via S. Ignazio and Via Piè di Marmo (number 24). Preserved from the cellars up to the first floor, it was constructed with square travertine blocks.
The first known ancient depiction of this monumental arch appears in the Arcus ad Isis relief, which decorated the mausoleum of the Haterii family on Via Labicana (modern Via Casilina) in Rome. Quintus Haterius Thychicus, a contractor under Domitian, was responsible for several major construction projects in Rome, including the Colosseum. The Haterii were among the principal builders of imperial Rome during the Flavian dynasty.
Numerous historical records confirm the existence of this monumental arch after the fall of the Empire. During the Middle Ages, the square now occupied by the Roman College was known as Campo Camigliano until the Jesuits redesigned the area at the end of the 16th century (1584).
The Camigliano Arch appears in many 16th-century maps, including those by Nicolaus Beatrizetand Antonio Tempesta, where Via del Piè di Marmo is referred to as the road beneath the Camigliano Arch.
In 1590, during an excavation, Flaminio Vacca recorded the discovery of yellow marble columns, sacrificial altars, and rams from the Iseum.
One surviving artifact from this period is a large marble foot, likely belonging to a statue of Serapis,now located at the intersection of Via Santo Stefano del Cacco and Via di Piè di Marmo.
Originally positioned on Via Piè di Marmo, the foot was relocated to accommodate the funeral procession of King Vittorio Emanuele II and was never returned to its original location.
The Camigliano Arch suffered multiple mutilations before its complete demolition at the end of 1592.
Records from the Compagnia della Ss. Annunziata, the owners of the building at the time, document the sale of the property in 1595 to Cardinal Anton Maria Salviati, who commissioned the construction of a palace that later became part of Palazzo Doria Pamphilj.
In the late 20th century, as part of the sale of commercial properties within the site, architect Carlo Balbino acquired the area containing the remains of the Camigliano Arch. Recognizing its historical significance, he collaborated with the Roman Archaeological Superintendence, under Professor Adriano La Regina, to conduct excavations.
Between 1980 and 1981, these efforts revealed the Roman-era floor level and exposed the northern section of the ancient arch.
Following the excavations, the remains were placed under the protection of the Archaeological Superintendence of Rome and the Ministry of Cultural Heritage. Due to the high costs associated with the excavation and subsequent structural consolidation, Balbino decided not to complete the finishing work on the building, leaving it in an unfinished state until 2024.
In 2020, a company belonging to the Viaggi dell’Elefante group acquired the property from Balbino's heirs, marking a new chapter in the history of the site.
