Inchkeith Island, Scotland
Despite having a long history of use and habitation, Inchkeith Island has been left to its own devices for the past hundred years. In its past, this island was incredibly important to Scotland from a military and strategy perspective, and as a result suffered many attacks during the Scottish Wars of Independence all the way up to WW2.
Outside of military use, the island was also used for quarantining the sick. Going back to the 1400’s, the island held those suffering from syphilis, as well as the plague. The problem was that those sent to the island assumed they’d be returned home when they were cured. Instead, the island was a one way ticket to death. No one came back.
The island was also used for an experiment during the Renaissance by King James IV, who sent a mute woman and her infants to the island to see what language the infants would learn to speak, assuming that they’d inherently speak the ‘original language of God.’ No one knows what they ended up speaking, if at all.
Since the end of the war, the island’s changed hands, but never seen any new inhabitants, and just stands as a desolate sentinel.