The village of Gragnola is situated in the alluvial flat generated from the Lucido and Aulella streams. It probably derives its name from the commerce of grain developed in the suburb in the Middle Age. Perhaps of roman origin, Gragnola first mention dates back to the dominion of the family of the Bianchi of Erberia. In the XV century, with the rise of the Malaspina. Gragnola was rounded by walls. Today only some rests remain towards Monzone.
Gragnola is dominated by the castle of the Eagle, placed on the top of a hill. The line of the marquises of Gragnola born from a branch of the Malaspina di Fosdinovo. The first Lord was Gabriele. This branch is sadly famous because in 1418, Leonardo Malaspina took the castle of the Verrucola of Fivizzano and ordered the slaughter of all that family. (Only Spinetta survived).