Island porn is the best porn. Now someone please give me $10 million.
Isla Centinela, Spain, $4.2 million
From the listing: "A 1920s Spanish castle that spends six months of the year surrounded by water and is only accessible by boat."
Random fact: The island comes with a private jetty.
Greek island in the Ionian Sea, $48.1 million
From the listing: "The Greek island rises to 334 meters in height with dramatic cliffs. Its natural harbors, clear blue green waters, sand and pebble beaches, and sea caves give it the features of a classic paradise island."
Random fact: The island comes with goats. A shepherd takes care of them every four days.
Le Moulin Fort Chisseaux, France, $2.4 million