The Maremma is the south-western corner of Tuscany, and until it was drained it was malarial marsh that nobody wanted. That history is why it is still half empty: long beaches with pine forest behind them, a park with wild cattle and horses in it, and hill towns that see a fraction of the traffic of the ones further north.
Its three great sights are all within twenty minutes of each other. Pitigliano stands on a tufo cliff as if it grew out of it, with a Jewish quarter cut into the rock beneath. Sovana is a single medieval street with Etruscan tombs in the woods below. And running between them are the vie cave — Etruscan roads sunk deep into the rock, walled in green, for reasons that are still argued about.
Two hours from Rome. Leave early and make it the whole day, or take the weekend.
Sorano is the third of them and the one nobody names: stacked, half-abandoned, and the quietest of the three. All three sit close enough together to do properly in a day, which is unusual for hill towns and is most of the reason this corner works as a single trip.
The vie cave between them are the thing people remember. They are Etruscan roads cut down into the rock, in places deeper than the buildings above them and no wider than a cart, green with moss and cool in any weather. Nobody is certain why they were dug so deep. Walking one takes an hour and is unlike walking anything else in Italy.
Saturnia is the other reason. Hot sulphur water falls down a staircase of white travertine basins that the water itself built, and the pools at the old mill are open, free and busy — go at dawn or in winter and you may have them nearly to yourself. There is a built spa alongside for anybody who would rather have a changing room.
The coast is the fourth part and the quietest: Orbetello on its lagoon with flamingos in it, the Argentario across the water, and the Maremma park at Alberese with long-horned cattle and pine forest running down to a beach with nothing on it. That is a whole separate day, and the argument for staying the night.