Top 10 Most Beautiful Ionian Islands to Visit 8553 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) Top 10 Oldest Cities in the World Blog (Articles) You Can Still Buy a Private Island in Europe for Under €500,000 — Here’s Where Blog (Articles) 10 Restaurants with the Best Views in the World Blog (Articles) Top 10 Most Expensive Yachts in the World Blog (Articles) Top 10 European Cities With Incredible Old Towns Blog (Articles) 10 European Towns That Look Straight Out of a Storybook