Even in times of scientific and technological advancements, our beautiful planet remains full of mysteries. From the incredible bismuth crystal that looks like it came from some sort of sci-fi film to the enchanting glowing forest in Japan with its luminescent mushrooms scattered along the forest floor, there are so many exquisite finds on Earth. They make us question how much about the place we inhabit we don’t really know.

Some of the most standout mysteries that have been captivating the imagination of many throughout the years include Stonehenge in Wiltshire, England. The structure consists of a ring of standing stones, with each stone standing approximately thirteen feet high, seven feet wide and weighing 25 tons. It’s believed to have been built about 5000 years ago, but scholars still do not agree on what its purpose could have been.

Another mysterious object is the stone spheres found in Costa Rica, located on the Diquis Delta and on Isla del Cano. There are over three hundred petro spheres scattered throughout the country that are still considered a great, unsolved archaeological mystery. The heaviest of them weighs many tons, and they’re believed to be made of granodiorite.