You can learn about the history of Tivoli when you stop by Villa d'Este. While you're in the area, wander around the gardens.
You can learn about the history of Villa Adriana with a stop at Hadrian's Villa. Wander around the gardens or experience the area's art scene.
Commune with nature and explore the great outdoors at Marmore Waterfall during your travels in Terni. Amble around the area's parks or visit its temples.