The construction of Ryugyong Hotel, also known as "Hotel of Doom", began in 1987 but the building never opened and is considered the tallest unoccupied structure worldwide. Ryugyong Hotel is an imp...
Read MoreThe underground nuclear explosion in North Korea on September 3rd, 2017 was so powerful that it moved a mountain, according to new research. The underground nuclear explosion in North Korea on...
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