The Bolivian city of Potosí is one of the highest in the world, with a height of 13,418 feet. Centuries of mining activity in the area have put the city at risk of collapsing, with a portion of the summit having already crumbled.
Galápagos Islands, Ecuador, located 575 miles off the coast of Ecuador, the Galapagos archipelago & it's surrounding waters are a national park a biological marine preserve, and a UNESCO World Heritage Site. The area's raw beauty & abundance of unique species, like the giant tortoise, make it a nature lover's dream.
Great Barrier Reef: One of the few places on Earth to be spotted from outer space, might shrink so much that it may not be visible even on Earth. This is the world's largest coral reef system and biggest single structure made by living organisms. The ongoing climate change, water pollution, over-fishing and shipping accidents might destroy this region and the endangered species inhabiting it completely.