The Pirate Bay tried buying their own island in hopes of making their own country with no copyright laws.
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
There is an island near Italy that was the site of wars, a dumping ground for plague victims, and an insane asylum. It's considered so dangerously haunted that the Italian government does not allow public access.
Mackinac Island, Michigan, has banned cars since 1898!