The monastery of Agia Markella is located 6 km from Volissos village. The temple is surrounded by enormous plane trees. In the yard of the church there are old cells, now used as guesthouses, offering free accommodation to the pilgrims. The greatest pilgrimage that takes place in Chios is on the 22nd of July each year, at the feast of Saint Markella. According to the tradition, during the feast, the sea that is nearby turns red, like the blood of the holy, which was poured on these waters.