The magosto (chestnut roast) of All Saints Food and drink · Hermisende, Sanabria, Zamora At All Saints the magosto is celebrated, the roast chestnut festival that the Alta Sanabria shares with Galicia and northern Portugal, in hills where the chestnut is still a tree of economic use. Photo: L.Miguel Bugallo Sánchez ( Lmbuga ) (Public domain) What to see and do in Hermisende