This took its name from the Capitolium of Roman times, the remains of which were found under the Piazza Luna; the three cellae were clearly traceable.
The Piazza del Museo marks the site of the forum, and the museum on its north side is ensconced in a Corinthian temple with three cellae, by some attributed to Hercules, but more probably the Capitolium of the city, erected by Vespasian in A.D.
The pseudo-classicism of the period of Marietta's foundation is indicated by the names - Capitolium for one of the public squares, Sacra Via for one of the principal streets, and Campus Martius for the fortification.
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