To the south east, beyond an every narrower channel, is the island of Tinos. Its highest peak is Mount Tsiknias (713 m), at the east end of the island. The inhabitants live by farming on terraced fields. Characteristic features of the landscape are the Venetian-style tower-like dovecots, of which there are some 1300. There are also numerous windmills.
Despite their charming ports both Andros and especially Tinos are rarely visited by charter yachts. Yet, the ports of Panormos and Tinos on Tinos island are definitely worth extra mileage.
In ancient times, from the 3rd c. BCE onwards, the Sanctuary of Poseidon and Amphitrite was a major religious centre and in our own days, since the early 18th c., Tinos has possessed a leading shrine of the Orthodox Church.
 
Held from 1207 to 1712 by Venice, Tinos had the longest Frankish period of any part of Greece, and in consequence its population includes a considerable proportion of Roman Catholics. The Orthodox population began to increase from 1822, when - during the War of Liberation - a nun named Palagia, guided by a vision, found a wonder-working icon of the Panayia, which soon became the object of annual pilgrimages of the feasts of the Annunciation (25 March) and Dormition (15 August), so that Tinos developed into a kind of Greek Lourdes.
The island came into international prominence when on 15 August 1940, two months before Mussolini's declaration of war, an Italian submarine torpedoed the Greek cruiser "Elli", which was lying in Tinos harbour for the Feast of the Dormition.