The highest point of the island is the mountain Kouvouli with an altitude of 476 meters with smaller mountains consisting of Geladias 456 m, Tourkovigla 343 m, Kalovoulos 355 m, Vouno 255 m etc.
Alonissos, third in size of the Northern Sporades, has a permanent population of 3000.
Alonissos and the uninhabited islands of the Northern Sporades form an island cluster of incomparable beauty and exceptional ecological value. Of the habitat types, the most significant are the marine Posidonia beds (priority habitat type), and the sea caves (refuge of the Mediterranean monk seal). Of the plants species, a number of chasmophytes are endemic to the Sporades and five species are included in The Red Data Book of rare and threatened plants of Greece. Of the island's animal species, the Mediterranean monk seal is one of the most endangered species in the world.
Alonissos is covered with pine trees, olive trees, almond-trees, holm oaks, mastic-trees, arbutus bushes and also fruit-bearing trees. Its clear sea, dreamy coasts, bays, vegetation, the inhabitants traditional hospitality and the calm, cool atmosphere make Alonissos a place where someone can really rest during one' s summer holidays and come back into daily life refreshed and full of new impressions.
Alonissos has taken its name after the liberation of Greece from the Turks and the establishment of the New Greek nation. In ancient times Alonissos was called IKOS.
The relics of prehistorical times that are found on Alonissos such as Cyclopean walls and fortifications testify to the long history of the island. It is positively known that like all the islands of the Northern Sporades, the Dollops populated Alonissos, who were related to the tribe of Pelasgi. Later the islands were annexed to the Athenian State. Following that the Macedonian King Philip had an eye on Alnicos; a fact that compelled the great orator of ancient times Demosthenes to write his fiery speech "About Alonissos".
During the Byzantine Empire, Alonissos flourished, a fact made known to us by the monuments of that period, which to this day attract the attention of the visitors. The island was in these times conquered by the Francs, who completed the existing fortification. Finally, it submitted like the rest of Greece to the Turks. Following its liberation in 1821, it is only in recent years, that the island is flourishing and it owes this to its clear waters, beautiful coastline, pine-clad areas and the hospitality of its inhabitants.
During the winter months independent travel to Alonissos means a scheduled flight to Athens followed by an internal flight to Skiathos, 4 - 5 hour train or coach journey (3 hours with private car) to Volos or a 2 hour coach journey to Agios Konstantinos. There are ferries and hydrofoils to Alonissos from both Volos and Agios Konstantinos alt
The Old Town (Chora)dates back to the Byzantine period in history and was the original capital of the island before the houses were destroyed by the disastrous earthquake of 1965. As with all hilltop Chora's the houses are knitted together with an intricate network of narrow paths and lanes that were originally designed to make li