The Eisgrotte Belvédère at the Rhone Glacier is a cool spot (literally!) where you can explore a blue ice cave carved into the glacier. The entrance fee is CHF 9, and you'll get to see the source of the Rhone River and stunning glacier views.
Don't forget your sturdy shoes and a warm jacket, as it's a bit chilly up there! Plus, after checking out the ice cave, you can treat your feet to a refreshing Kneipp bath in mountain spring water. It's a unique experience that's worth the visit!