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Sivriada as seen from the east

Sivriada (Greek: Ὀξεία, Oxeia) also known as Hayırsızada, is one of the Princes' Islands in the Sea of Marmara, near Istanbul.

The island, which has an area of 0.05 km², is officially a neighbourhood in the Adalar district of Istanbul, Turkey.

Sivriada was often used by the Byzantine clerics as a distant place for peaceful worship, and by the Byzantine emperors as a convenient prison to detain prominent people whom they deemed troublesome. The first famous person to be imprisoned in the island by the order of emperor Nikephoros I was Plato of Sakkoudion, the uncle of renowned cleric Theodoros Stoudites, for supporting his nephew in his conflict with the emperor. Other famous people who stayed in the island for religious and political reasons were Gebon, Basil Skleros, Nikephoritzes (the chief minister of Michael VII Doukas), Patriarch John of Constantinople and Patriarch Michael II of Constantinople. The graves of those who died on the island during the Byzantine period can still be seen today.[1]

The ruins of a Roman settlement and a 9th-century Byzantine monastery can still be seen on the shore, close to the fishermen's shelter, a small wharf which is often used by yachts. The most important buildings on the island were built in the 9th century AD, including a church, a chapel dedicated to religious martyrs, a monastery on the eastern end (with its walls still seen today) and a cistern in the center of the island (a part of which can still be seen).

In 1911, in an event called "Hayırsızada Dog Massacre", the Governor of Istanbul ordered the stray dogs in the streets to be rounded up and exiled to Sivriada. About 80,000 dogs were killed during the ordeal, mostly due to hunger and thirst on the barren land of the island, and some due to drowning as they tried to escape the horrible conditions of the island. A severe earthquake which immediately followed the event was perceived by the local as "a punishment by God for abandoning the dogs." That is why the island is known both as Sivriada and Hayırsızada ("the useless island").[2][3][4][5]


  1. ^ "Sivriada". Municipality of Adalar (Princes Islands). Retrieved 14 November 2014.
  2. ^ "Animal Party to commemorate four-legged massacre victims". Today's Zaman. Archived from the original on 6 October 2014. Retrieved 1 October 2014.
  3. ^ "Activists apologize to stray dogs killed by Unionist government". Today's Zaman. Archived from the original on 6 October 2014. Retrieved 1 October 2014.
  4. ^ "Street Dog Genocide: The Sad History of Turkish Street Dogs". A Street Dog's History. Archived from the original on 6 October 2014. Retrieved 1 October 2014.
  5. ^ Avedikian, Serge. "Chien d'Histoire". Youtube. La Fabrique Production and Anadolu Kültür. Retrieved 14 November 2014.

Coordinates: 40°53′N 28°58′E / 40.883°N 28.967°E / 40.883; 28.967