Some places to enjoy the summer season!!

Well, I have visited some of these countries in it. But Maldives is one of the most favorite countries. It is famous for its beautiful views and beaches. I have visited this country tour with my lover. I have enjoyed many things there. It was an admirable trip for me. After reading these countries' names I have decided I must visit Santorini, Bagan, Iceland, the Great Barrier Reef, and Galápagos Islands. So, I want to ask if you can share some massive information about these countries here. Waiting for your response.