These two attractions are close to one another, but otherwise have little in common. The so-called Arco d'Augusto stands opposite the 18th-century Palazzo Gallenga, the seat of the Italian University for Foreigners. The Arco itself is a gateway into the old city, built upon the ancient Etruscan walls. The Arco is a Roman reconstruction of an earlier Etruscan gate. The church of Sant'Angelo is a few blocks away. Also called San Michele, this is an ancient Christian church (6th or 7th century?). It is built on a circular plan, and is quite interesting architecturally. Attending services there brings to mind the long history of Christianity in this place, while the Arco reminds the tourist of Perugia's even older history dating back even long before the Romans to the Etruscans.