Goli Otok labor camp and prison

Goli Otok (pronounced [ɡôliː ǒtok], lit. 'Barren Island') is a barren, uninhabited island off the Dalmatian coast of Croatia. The island is located in the northern Adriatic Sea just off the coast of Primorje-Gorski Kotar County, with an area of approximately 4.5 square kilometers (1.7 sq mi). Exposed to strong bora winds, particularly in the winter, the island's surface is almost completely devoid of vegetation. It was the site of a political prison from 1949 and 1989, when the nation was part of Yugoslavia. It is known as the "Croatian Alcatraz" due to its historic association with the prison complex.

Prison data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).