The Midwest is known for its roadside attractions — world's largest ear of corn, heaviest ball of twine, biggest truck stop.
But it's also home to one of the largest collections of grottoes in the world. Most of these man-made caves were created by immigrant priests at the beginning of the 20th century. And the mother of them all — encrusted in $6 million worth of semiprecious stones — is in West Bend, Iowa.
This weekend, the Grotto of the Redemption turned 100.