Azores, Portugal

This mid-Atlantic archipelago features 15 active volcanic cones accessible via hiking trails, alongside thermal pools that maintain a constant 39°C year-round—perfect for relaxation after whale watching, where 24 cetacean species are spotted. Compared to Hawaii, the Azores see 80% fewer annual tourists, offering a more unspoiled experience with a per-night accommodation cost averaging €120, which is 35% cheaper than the typical rival in Hawaii's resort districts.