Top 10 Most Beautiful Ionian Islands to Visit 58 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) Best Boutique Hotels in Rhodes, Kos & Beyond Blog (Articles) Top 7 Traditional Dishes You Must Try in Paros Blog (Articles) Top 5 Prettiest Villages in Paros Blog (Articles) Top 10 Things to Do in Rhodes for Culture & History Lovers Blog (Articles) Top 6 Luxury Hotels in the Ionian Islands Blog (Articles) Best Islands in the Ionian for Swimming & Snorkeling