This manor, well preserved and still partially inhabited, which stands in pleasant green surroundings, near a pond, has kept its mark and all the charm of the Great Epoch. The Plessis Josso is classified as french "Monument Historique". This beautiful Breton feudal building has kept its fortified crenellated ramparts which protected it from the pillaging bands that travelled the area up and down during the murky periods (16th century).

The Plessis Josso was built in 1330 by Sylvestre Josso, squire of the Duke Jean III, during the period of Succession war (14th century). Alliances made it pass in 1681 in the Rosmadec powerful family which was reigning at the time on an estate of nearly 600 ha. The Plessis Josso accommodated several important persons, like the Vannes bishop, seneschals and Breton governors. At the end of the 18th century, it became the Le Mintier de Léhelec family property. This family still lives here currently...

The Plessis Josso, like all Breton manors in 15th century, had an agricultural vocation: it led an estate of 1500 hectares and a population of 500 persons. Several buildings around the manor point out its economical function: barns, water mill on the pond (1783), baker's ovens, chapel, commercial port... Its role was thus political, economical, and administrative.