Explore the heights of America's tallest skyscrapers in this comprehensive comparison video. We rank the tallest buildings ...

From a tower with the largest clock on Earth to a mind-bogglingly tall building that holds 7 world records, this video presents a 3D comparison of the tallest skyscrapers on the planet. It features ...

On Saturday night, Alex Honnold, considered the greatest free solo climber in history, attempted to scale a structure called ...

Add Yahoo as a preferred source to see more of our stories on Google. Looking back through time, the world’s tallest man-made structure was the Great Pyramid of Giza in Egypt. It held that position ...