West Bend, United States of America
The Shrine of the Grotto of the Redemption is a religious shrine in West Bend, Iowa, in the Roman Catholic Diocese of Sioux City. A conglomeration of nine grottos depicting scenes in the life of Jesus, it contains a large collection of minerals and petrifications and is believed to be the largest gr
otto of its kind. It is also "considered to be the world's most complete man-made collection of minerals, fossils, shells, and petrifications in one place." The estimated value of the rocks and minerals which make up the Grotto is over $4,308,000. Over 100,000 people visit each year. It includes a museum with precious and semiprecious stones from throughout the world, and photos and artifacts about the construction of the shrine.
Listen to the audio guide for Grotto of the Redemption Free on WIP — starts by itself when you arrive, even with the screen off