Top 10 Most Beautiful Ionian Islands to Visit 6922 1Kastos Island Kastos is one of the most untouched Ionian islands. With very small villages and limited tourism infrastructure, it offers pure relaxation and isolation. Visitors come here to escape crowds and experience traditional island life.BackNext RELATED ARTICLESMORE FROM AUTHOR Blog (Articles) Santorini in 5 Days: The Perfect Island Itinerary Blog (Articles) The Greek Beaches You Need to See Before Everyone Else Finds Out Blog (Articles) These Greek Seaside Villages Are Pure Summer Magic Blog (Articles) 9 Greek Islands That Haven’t Been Ruined by Overtourism Yet Blog (Articles) 9 Dreamy Greek Islands That Feel Like Another World Blog (Articles) The Most Beautiful Greek Islands for a Summer Escape