[7] In modern history, the island was briefly transformed into a naval prison, in accordance with the French model of the time, as well as place of exile for political dissidents.

In order to protect the ecosystem and due to considerations for negative implications on tourism, a sewage treatment plant was installed on the island which started operation in November 1994.

On June 1, 2007, the sludge treatment plant was put into operation, with two production lines of a total waste drying capacity of 500 tons per day.

[5] It is estimated that the remaining sludge of 150,000 to 160,000 tons that was accumulated on the island over the years when only the primary treatment was active, would be converted to biofuel in the first six months of operation, and used in industry, especially in cement kilns and electricity power plants.

[10] In the northeastern part of the island, which is not occupied by the sewage treatment plant, there is a lighthouse and a station of the Hellenic Coast Guard Vessel Traffic Service system.