The bay of Tzortzi Giallos is probably the most idyllic landscape of Alonissos. The beach adds its own shades to the "palette" of natural colors of the island.
Alonissos is the northernmost inhabited island of the Sporades. Along with the Peristera islets (Kyra Panagia, Gioura, Psathoura, Piperi and Skantoura) it comprises the National Marine Park of Alonnisos of Northern Sporades, which is the largest of its kind in Europe and unique in Greece.