Château de Langoiran, Medieval castle in Langoiran, France.

Château de Langoiran is a ruined stone castle on a slope above the Garonne Valley. Its 14th-century cylindrical keep, one of the widest in France, stands beside a round tower with a conical roof and a rectangular building with a dark tiled roof and a large arched opening. Curtain walls enclose a dirt courtyard, ruined along the upper edges, with grassy terraces below.

The Seguin d'Escoussans, vassal knights of the lords of Benauges, built the castle in the 13th century. A 1345 marriage brought it to the Albret family, then to the Montferrand. In September 1649 the duc d'Épernon burned it and blew up the keep; restoration began in 1972.

The castle displays the shift from medieval to Renaissance building styles through different stonework and construction methods visible in its walls. As you walk the grounds, you can see how each period left its mark on the structure.

You can explore the grounds and central tower on guided tours available during the warmer months. The castle sits on a hillside, so wear sturdy shoes and be prepared for uneven paths.

The cylindrical keep, built in the 14th century, is one of the widest in France. It stands on the break of slope and is protected by an arc-shaped ditch joining the valley and the small side valley. Inside, three octagonal rooms and a surviving spiral staircase remain.