This is a district under the government of a prefect (or prefecture) in Greece. It's made up of a number of islands in the Aegean Sea.
According to Greek mythology, the god of the islands was called 'Lesbos.'
An ancient poet called Sappho wrote about love between women about 2700 years ago and that's where we get the term 'lesbian' from.
Apparently, Sappho's poetry was
pretty hot stuff and the
Christians didn't like it. Little of it remains today thanks to a policy of it being destroyed by those against it.