Riholo dolmen
Transepted dolmen · Herbignac
Fortress
château de Ranrouët
Ranrouët Castle () is a medieval fortress in the commune of Herbignac in the Loire-Atlantique department of France. Built in the 12th century in what is then the Duchy of Brittany, it was gradually built until the 17th century, then abandoned in 1793. This monument has been the subject of an inscription in the title of historical monuments since November 10, 1925.