Omfori
Omfori Island is a private, uninhabited, island in the Ionian Sea. the island has one building, a church, and is unpopulated. In 2015, the island was on sale for $61.9 million, and in 2017, it was the most expensive island in Greece and the 9th most expensive in the world, for $60 million. As of 2021, the island is still on sale for $55 to $62 million.