Few of Earth's formations seem to suggest an intelligent creator quite like natural arches and bridges do. But it is precisely the fact that they were molded by the delicate hands of a heedless, indifferent sculptor — Mother Nature — that make them so awe-inspiring, like the Delicate Arch in Utah. Perhaps the beauty of natural arches comes from how improbable they seem.
Carved from nothing more than the weathering hand of time and Earth's own forces, here are some of the world's most wondrous natural arches.
This gallery has been updated with new information since its original publication in May 2015.