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The Carletti thermal spring is 2.5 kilometers from the center of Viterbo, near the intersection of the Terme road and the Tuscanese road. Actually, there are two natural sources of water, similar to the hot, sulfurous one in nearby Bulicame. The water has a temperature of around 136 F° and feeds several pools surrounded by a huge lawn. Needless to say, they are also very popular in winter.

Nearby, there is an unattended car park and a bar. You can easily reach the spring with public transport.
Unfortunately, there are no trees or shady areas.

This post is also available in: Italiano (Italian)