Castasegna reveals itself through two distinctive themes: the architecture of Villa Garbald and the chestnut culture of Brentan. The village lies at an altitude of 686 metres, yet has a rather Mediterranean climate. This combination shapes the character of the place—from its well-kept gardens to its historic village districts.

Village Life, Gardens and Bergell Culture

Castasegna is a village in the political municipality of Bregaglia, in the Italian-speaking part of the canton of Graubünden. Bergell, called Val Bregaglia in Italian, is the valley of the upper Maira between the Maloja Pass and Chiavenna. Palms, fig trees, camellias and grapevines grow in Castasegna’s small gardens. Old wash fountains along narrow paths and lanes are also part of the village’s character: they recall its former farming community.

The paved main street is lined with magnificent houses dating from the 17th century. At the Church of the Holy Trinity, the bell tower dates from 1660. The Church of San Giovanni Battista near the Maira was first mentioned in 1409. At Borgo Casnàcc, another historic settlement pattern can be traced: the village was laid out as a fortified village, or Maiensäss, with small houses, stables and chestnut-drying huts grouped around a meadow. Today, you can see, among other things, a stone house belonging to the Fondazione Garbald, another residential building, several stables and dry-stone walls.

Villa Garbald and Historic Traces

Gottfried Semper built Villa Garbald in 1863 and 1864 for Agostino Garbald and Johanna Garbald-Gredig. It is Semper’s only building south of the Alps. The villa’s artistic interiors are open to the public at certain times and during events; check the relevant opening times before your visit. Galleria il Salice opened in the historic village district in 2012.

Chestnut Forest and Educational Trail

Above Castasegna lies the Brentan chestnut forest, one of Europe’s largest cultivated sweet chestnut forests. Chestnuts are not just part of the landscape here: at the Cascine, smaller chestnuts are dried over a smouldering fire for up to five weeks. A model hut in Brentan demonstrates this traditional method. Castasegna is also home to centuries-old sweet chestnut trees; the marroni harvest can be seen in autumn.

The approximately two-kilometre-long chestnut educational trail runs through the chestnut grove and features five learning stations. They provide information about processing sweet chestnuts, caring for the trees, different chestnut varieties and threats to these delicate plants. Weekly guided hikes along the trail are planned for 2026; check the specific dates before your visit.

Trails and Walks

Castasegna is a designated stop on the Via Bregaglia. This multi-day cultural trail is approximately 34 kilometres long and can be completed in three or four stages. The Castasegna–Casaccia route is a different proposition: it is 19.2 kilometres long and rated difficult. The annual Bregaglia Trail passes through Castasegna as a 42-kilometre trail-running route. These figures describe different activities—a multi-day cultural trail, a route rated difficult and a trail-running competition. Check the specific event dates and conditions before taking part.

If you would like to focus on the village, guided walks through Castasegna can be booked on request. They last one and a half to two hours. For travel by PostBus, the Castasegna, Vecchia Dogana stop is served by route B4; check the timetable for your travel date.

Discover more destinations: S-Chanf, Stampa, Sils/Segl Baselgia, Samedan, La Punt-Chamues-Ch, Soglio Gr, Casaccia, Sils im Engadin.

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