The Château de Montsoreau is a Flamboyant Gothic castle in the Loire Valley, directly built in the Loire riverbed. It is located in the market town of Montsoreau, in the Maine-et-Loire département of France, close to Saumur, Chinon, Fontevraud-l'Abbaye, and Candes-Saint-Martin. The Château de Montsoreau is situated at the confluence of two rivers, the Loire and the Vienne, and the meeting point of three historical regions: Anjou, Poitou, and Touraine.
A Gallo-Roman origin has been verified for the settlement of Montsoreau but not confirmed for the castle, even though a fluted column made of stone from a Gallo-Roman temple or a public building was found in the moat during the restoration works of the end of the 20th century. The first written sources are from the 6th century with the domain of Restis, but it was only with the construction of a fortress at the end of the 10th century that the market town began to become prosperous. One part of this first castle was found during the same restoration works by the archaeologists. The castle was reconstructed in a Flamboyant Gothic style between 1450 and 1460 by Jean de Chambes, one of the kingdom's wealthiest men, a senior councillor and chamberlain to King Charles VII and King Louis XI.