Myrtos is the postcard image of Kefalonia — a sweep of blinding white pebbles against water that shifts from pale turquoise to deep cobalt, enclosed by sheer cliffs that drop straight to the sea. It's on the island's northwest coast, reached by a winding road from the village of Divarata above.
The beach is genuinely spectacular and genuinely popular; expect crowds in July and August. Come early morning or late afternoon for the best light and fewer people. There are sun beds and umbrellas for hire, and a beach bar for food and drinks. The pebbles are uncomfortable to walk on without water shoes, and the sea is clear and deep — good for swimming if you're confident.
The viewpoint on the road above Myrtos, about 500 metres before the beach turnoff, is one of the most photographed spots in Greece. Stop there before descending.