Château de la Source du Rollin, Castle in La Chapelle-Saint-Mesmin, France.

The Château de la Source du Rollin is a stone building begun in the 15th century and enlarged in the 19th, with a two-storey main block plus attic and two lower one-storey wings whose roofs carry dormer windows. The estate covers about 4,350 m² with outbuildings and a wooded park of roughly 5 hectares, reached from the RD 2152 by an elm-lined drive. The Rollin stream rises below the castle and joins the Loire 3 km away.

The castle was built in the 15th century and later served as a German military command post during the Franco-Prussian War of 1870. The property survived this conflict and continued to be used afterward.

From 1880, owner Maximilien Simon Genteur bought up nearly 80 parcels of land left bare after the phylloxera crisis destroyed the vines, and replanted them with poplars and elms. This formed part of today's woods of La Chapelle, or municipal park. Timber from these trees was later sold, and in 1908 sawyers and in 1924 a saw bench were set up.

The castle stands at 284 route de Blois, southwest of La Chapelle-Saint-Mesmin's centre and about 400 metres from the north bank of the Loire. From the RD 2152, an elm-lined drive leads to the building. The estate covers roughly 5 hectares of wooded park around the castle.

In 1828 the estate's sale notice listed two grain mills: a stone windmill and a watermill on the Rollin. The stream rises below the castle and reaches the Loire at the end of the valley, near Saint-Ay, three kilometres away. Two archaeological sites are recorded at La Source du Rollin: a possible Gallo-Roman place of worship and a circular enclosure.