We've made huge strides towards finding exoplanets and surveying the other worlds in our solar system recently — but most of us will never know what it's like to stand on another soil, especially under another sun. Good thing there are a lot of places on Earth that you could easily mistake for strange new worlds.
Richat Structure (also known as the Eye of the Sahara), a circular structure in the Sahara desert near Ouadane, Mauritania
Great Blue Hole, a 406 ft (124 m) deep circular submarine sinkhole Belize with a radius of 984 ft (300 m), formed during quaternary glaciation and made famous by Jacques Cousteau as a scuba diving site.
Spotted Lake (or Kliluk), near the city of Osoyoos in British Columbia, Canada, containing the highest quantities of sodium and magnesium sulfates and calcium in the world, but there are silver, titanium, sulphates and some other minerals, too.