(Source: Pinterest/Travelade | Iceland Travel via backpackerstory-blog.tumblr.com)
1. The Blue Lagoon, Iceland
#1 on our list is none other than the iconic Blue Lagoon. There is truly no other place on Earth quite like this milky white geothermal spa, located in a lava field (!) in Grindavik, Iceland.

Image via Pinterest | Tumblr.