San Gemini

San Gemini sits on the southern slope of the Monti Martani, ten kilometers northwest of Terni. Four kilometers north lie the ruins of Carsulae, a municipium on the Via Flaminia abandoned probably after an earthquake, with a stretch of polygonal Roman paving, the Arco di San Damiano (a gate or honorary arch), an amphitheater, mosaic floors and the remains of an aqueduct still visible in the archaeological park. The Sangemini and Fabia mineral springs rise just outside the populated centre and have been bottled commercially since the late nineteenth century; the brand is national.

The Duomo, originally twelfth-century late Gothic, was rebuilt in the nineteenth century by Livoni with consultation from Antonio Canova, and keeps a fifteenth-century portal. The thirteenth-century Chiesa di San Francesco anchors the eponymous square together with the Palazzo Canova. The Giostra dell'Arme, a medieval joust between the Rione Rocca and Rione Piazza, has run for fifty-two editions and remains the town's defining festa. The Corpus Domini Infiorata blankets the procession route with petal mosaics nine weeks after Easter.