Exo Didima is one of the smallest villages in southern Chios and might have taken its final form during the Genoese Occupation. Close to the village, there is the Byzantine monastery of Panagia Sikelia. The Monastery’s premises are said to have housed a Venetian mint. The earthquake of 1881 almost leveled the village and fewer than half of the residents were actually saved. After the earthquake, people started to build new houses on the outskirts. Today, the village has very few permanent residents, most of whom are elderly.