Whether carved into rock or made of iron, these staircases will leave you praying for an elevator. From China to Colombia, and steps carved by ancient civilisations to rickety stairs on the sides of mountains, these are the world's longest and scariest steps. These are only be attempted by those with a head for heights and legs that like to suffer. Half … [Read more...] about 10 of the world’s steepest and scariest staircases