You can visit a few of the smaller towns of the region, explore some of the medieval ruins, go hiking in the foothills and the mountains,  and even visit the churches and cathedrals to see their architecture. Recommended places to visit include:

La Riserva Naturale Monte Rufeno is a 7,000-acre nature reserve on the borders of Lazio, Umbria, and Tuscany.

You can tour the Bullicame Hot Springs near Viterbo.  These hot springs are carved out of white clay.

Lake Bolsena is the largest of the three volcanic lakes north of Rome.  You can tour the Collegiata di Santa Cristina Church and take an island ferry trip to Isola Bisentina where swimming and picnicking are welcomed.

The Gelateria Santa Cristina in Bolsena is one of Italy’s finest ice cream shops.  It was awarded the prestigious ice cream world cup in 2008.

Near Bolsena is the castle home Castello Ruspoli.  The gardens are unchanged since the 17th century.  Garden tours are available.

Civita di Bagnoregio is a main tourist draw.  You need to walk a pedestrian bridge to see the craft shops and tufa houses where Saint Bonaventure lived.

Online Latin lessons for kids: dinolingo.com