The Blue Lagoon, Iceland, is a geothermal spa. The outdoor bath remains 100-110°F year round. The natural ingredients of the warm water: mineral salts, white silica and blue green algae. These ingredients clean exfoliate, nourish & soften the skin while relaxing the body.
Hillier Lake, Western Australia: The pink and lovely Hiller Lake is the only vividly pink lake you will find in the world. The color is permanent and never changes, even when water is removed and placed in a separate container. Its startling color remains a mystery and while scientists have proven it's not due to the presence of algae, unlike the other salt lakes down under, they still can't explain why it's pink.
Rent a glass igloo in Finland to sleep under the northern lights.