24 Amazing Unknown Places You Never Knew Existed

23. Giant Crystal Cave – See The Unreal Beauty: Giant Crystal Cave at Naica Mine is also one of the weirdest places on the Earth. Deep down in the bowels of the Earth, these huge shiny mineral pillars are enough to make you feel claustrophobic. This mammoth structure has been growing underneath Mexico for more than 500,000 years. It makes for an exceptional case study on how organisms survive in extreme heat and humidity. All nature lovers must visit this place at least once. Location: Mexico. Best time to visit: December to April. How to reach: Fly to Chihuahua and take a bus or train to Naica. From here you can get a taxi to the caves.