dedicated to the deified Trajan is a matter of hotly contested debate among archaeologists, particularly clear in the ongoing debate between James E. Packer and Roberto Meneghini. Between the Basilica Ulpia and the terminal piazza containing the temple, were two libraries, one housing Latin documents and the other Greek documents. Between the libraries stood the Trajan's Column. The libraries housed state archives including the acts of the Emperors and the edicts of the praetors. Trajan's successor Hadrian added a philosophical school adjacent to the piazza containing the Temple of Trajan. The building consisted of three parallel halls separated by annexes and was known as the Athenaeum; it functioned variously as school, a venue for judicial proceedings, and an occasional meeting-place for the Senate. Constantius II, while visiting Rome in the year 357, was amazed by the huge equestrian statue of Trajan and by the surrounding buildings: Post-Roman history In the mid-9th century, the marble cobble blocks of the piazza were systematically taken for re-use, because of the good quality of the lime. They were replaced with concrete, showing that the piazza was still in use as a public space. By the 10th century the Imperial Fora were semi-rural, with a patchwork of houses and farmland crisscrossed by roads occupying the former plaza of Trajan's Forum. In the late-16th century, the whole area of the Imperial Fora, which by then lay 3–4 meters below ground, was built-up during a wave of urban expansion and the area became known as the Alessandrino district. In 1526 the arch which formed the entrance to the Forum was demolished by the maestri di strade, Rome's Commissioners of Streets, which caused the Conservatore Francesco Cenci to submit a report to Rome's municipal government seeking redress for the destruction. Vestiges of the arch were found later in the century, including friezes which depicted scenes from the Dacian Wars, according to the descriptions of Flaminio Vacca. In modern times only a section of the markets and the column of Trajan remain. A number of columns which historically formed the Basilica Ulpia remained on site, and have been re-erected. The construction of the Via dei Fori Imperiali in 1933 covered a number of these columns, which remain visible under the arches on which the road runs. See also Imperial fora Roman Forum Roman architecture List of ancient monuments in Rome Notes Sources External links Roma – I Fori Imperiali