While beauty is subjective, Corfu (Kerkyra) is widely considered the Greek island with the most lush and diverse natural landscape in 2026. Unlike the arid, volcanic scenery of the Cyclades (like Santorini), Corfu is part of the Ionian group and benefits from higher rainfall, resulting in millions of olive trees, dense cypress forests, and vibrant wildflowers. Its coastline features dramatic cliffs and the famous Canal d'Amour. Another top contender for nature lovers is Crete, specifically for the Samaria Gorge—one of Europe's longest canyons—and the unique palm forest of Vai. For those seeking "untouched" greenery, Skopelos and Alonissos in the Sporades offer dense pine forests that reach the water's edge. Alonissos also hosts a National Marine Park, home to the rare Mediterranean monk seal. Whether you prefer the dramatic mountain peaks of Crete or the emerald waters and rolling green hills of Corfu, the Ionian and Sporades islands provide a verdant contrast to the stark white-and-blue aesthetic typically associated with Greek island nature.