As you walk around town, keep an eye out for archaeological remains that have been incorporated into more modern buildings over the centuries: pieces of column, sculpted busts of gods and goddesses, and capitals. The western entrance to town on the ancient Via Appia was marked ARCO DI ADRIANO (Hadrian's Arch), a majestic triumphal monument that was actually composed of three arches. Today the marble finish has disappeared and only one arch remains -- the southern one -- although you can see the three brick pillars that supported the central arch. Farther along, at Corso 210, are the remains of a Roman house, Casa di Confuleio Sabbio (discovered by chance during construction in 1955), which dates from the 1st century B.C. It was the home of a freedman, a merchant specializing in the production of sagum: the heavy woolen cape worn by soldiers and -- in a less-refined version -- by slaves and paupers. At the corner of Corso and Via Galatina is the large building that was a prison until only a few decades ago; beneath it are the remains of a criptoportico, an ancient Roman covered promenade that is believed to have been part of the Capitolium, an ancient Roman temple.

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