Kastro Apilarou
Above the village of Sangri, you can make out the ruins of Kastro Apilarou, the castle vanquished by the Italian conquerer, Marco Sanudo. The castle was the defensive stronghold for the region and held out for two months, but locals today still say its a bit of a mystery about who the Apilarou family really was before Sanudo came and took over. If you do make the tough climb to view it up close, you'll be greeted with a fantastic view of the Naxian plains.