Part of it is built on a level plateau and part in deep valleys adjoining, the tops of the campaniles of the lower portions being on a level with the streets of the upper.
The castle was originally erected by Robert Guiscard, but as it now stands it is mainly the work of the Doria family, who have possessed it since the time of Charles V.; and the noble cathedral which was founded in 1153 by Robert's son and successor, Roger, has had a modern restoration (though it retains its campaniles) in consequence of the earthquake of 1851, when the town was ruined, over one thousand of the inhabitants perishing.
The city has a well-built and substantial appearance, its chief attraction lying in the numerous churches, which belong in the main to a well-marked basilican type, and present almost too richly decorated exteriors, fine apsidal ends and quadrangular campaniles, in some cases with battlemented summits, and windows increasing in number as they ascend.
San Filippo Neri or dei Gerolomini, erected in the close of the 16th century, has a white marble façade and two campaniles, and contains the tombstone of Giambattista Vico.
San Filippo Neri or dei Gerolomini, erected in the close of the 16th century, has a white marble faÃ§ade and two campaniles, and contains the tombstone of Giambattista Vico.