Patmos is a small Greek island in the Aegean Sea. One of the northernmost islands of the Dodecanese complex, it has a population of 2,985 and an area of 34.05 km (13 square mi). The highest point is Profitis Elias, 269,2 meters above sea level. The Municipality of Patmos, which includes the offshore islands of Arkoi (pop. 54), Marathi (pop. 6), and several uninhabited islets, has a total population of 3,045 (2001 census) and a combined land area of 45.039 km².
Patmos' main communities are Chora (the capital city), and Skala, the only commercial port. Other settlements are Grikou and Kampos. The churches and communities on Patmos are of the Eastern Orthodox tradition. In 1999, the island's historic center Chora, along with the Monastery of Saint John the Theologian and the Cave of the Apocalypse, were declared World Heritage Sites by U N E S C O The monastery was founded by Saint Christodulos. Patmos is also home to the Patmian School, a notable Greek seminary.
Patmos is mentioned in the Christian scriptural Book of Revelation. The book's introduction states that its author, John, was on Patmos when he was given (and recorded) a vision from Jesus. Earliest Christian tradition identifies this writer as John the Apostle. As such, Patmos is a destination for Christian pilgrimage. Visitors can see the cave where John is said to have received his Revelation (the Cave of the Apocalypse), and several monasteries on the island are dedicated to Saint John.

According to a legend within the Greek mythology, the island's original name was "Letois," after the goddess Artemis, daughter of Leto. It was believed that Patmos came into existence thanks to her divine intervention. Mythology tells of how Patmos existed as an island at the bottom of the sea.
Deer-huntress Artemis frequently paid visits to Caria, the mainland across the shore from Patmos, where she had a shrine on Mount Latmos. There, she used to meet up with the moon goddess Selene, who cast her light on the ocean, revealing the sunken island of Patmos.
Selene was always trying to get Artemis to bring the sunken island to the surface and, hence, to life. Selene finally convinced Artemis, who, in turn, elicited her brother Apollo's help, in order to persuade Zeus to allow the island to arise from the sea.
Zeus agreed, and the island emerged from the water. The Sun dried up the land and brought life to it. Gradually, inhabitants from the surrounding areas, including Mount Latmos, settled on the island and named it "Letois" in honour of Artemis

The earliest remains of human settlements date to the Middle Bronze Age (ca 2000 B C They consist of pottery shards from Kastelli, the most important archaeological site so far identified.
Patmos is seldom mentioned by ancient writers. Therefore very little can be conjectured about the earliest inhabitants. In the Classical period, the Patmians prefer to identify themselves as Dorians descending from the families of Argos, Sparta and Epidaurus, further mingling with people of Ionian ancestry.
Judging from archaeological finds, Kastelli continued to play an important role on the island throughout the Ancient Greek period (ca 750 B C-323 B C.
During the 3rd century BC, in the Hellenistic period, the settlement of Patmos acquired the form of an acropolis with an improved defence through a fortification wall and towers.
After the death of John of Patmos, possibly around 100 A D a number of Early Christian basilicas were erected on Patmos. Among these was a Grand Royal Basilica in honour of Saint John, built ca 300-350 at the location where the Monastery of Saint John the Theologian stands today.
Early Christian life on Patmos, however, barely survived Arab raids from the 6th to the 9th century. During this period, the Grand Basilica was destroyed. In the 11th century, the Byzantine Emperor Alexios I Komnenos gave Reverend Father Christodoulos the complete authority over the island of Patmos, as well as the permission to build a monastery on the island. The construction of the monastery started in 1 1 0 1.
Population was expanded by infusions of Byzantine immigrants fleeing the Fall of Constantinople in 1 4 5 3, and Cretan immigrants fleeing the fall of Candia in 1669.
The island was controlled by the Ottoman Empire for many years, but it enjoyed certain privileges, mostly related to tax-free trade by the monastery as certified by Ottoman imperial documents held in the Library.
In 1 9 1 2, in connection with the Turco-Italian War, the Italians occupied all the islands of the Dodecanese, including Patmos. The Italians remained there until 1943, when Nazi Germany took over the island.
In 1 9 4 5, the Germans left and the island of Patmos remained autonomous until 1 9 4 8, when it, together with the rest of the Dodecanese Islands, joined the independent Greece