Château de Chambonas, Medieval castle in Chambonas, France.

Château de Chambonas is a medieval castle standing on a rocky outcrop above the Chassezac River in the Ardèche region. It features five towers with glazed tile roofs and displays different construction periods through its layout and stonework.

A tower stood here from the 11th century, later absorbed into the building as the reworked north tower. The land was an ecclesiastical fief of the bishop of Uzès, who gave it to the abbot of Saint-Gilles; a knight of La Garde-Guérin was charged with watching the ford and became first lord of Chambonas. The family held the estate until 1808, when the marquis de Chanaleilles bought it from Charles de La Garde de Chambonas, ruined by gambling debts. The 15th-century fortified house gained extra towers and machicolations during the 16th-century Wars of Religion.

The name Chambonas comes from the La Garde-Guérin knight called to guard the Chassezac ford, whose family held the estate until 1808. The French-style gardens and terraces are traditionally attributed to Le Nôtre or his pupils, and water was piped from springs half a league away to feed the fountains.

The castle is privately owned and visits require advance arrangement, so check in advance before planning a trip. Contacting the owners beforehand by phone or email is the best way to schedule a viewing and confirm visiting conditions.

The north tower, remodelled over the centuries, is thought to incorporate a tower raised on this site as early as the 11th century, making it the oldest surviving part of the building. The interior preserves a salon, a small salon and an Italian salon, and the staircase and three salons were listed as monuments historiques in 1963.