This wooded grove of beautiful hand-built stone grottos is a hidden gem within a shuttered Franciscan monastery.

A sculpture of a giant man escaping from the depths of the Earth.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

A bizarre house filled with an astounding array of collections.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

These beautiful wineries were at the center of Lake Erie's "grape belt" back when the Midwest dominated American wine production.

Deep scars on the earth left by the Ice Age.

World's largest Christmas store.

Known as "The Dome" this is the world's largest open air geodesic dome.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

Landmark dedicated to the plight of the American Indian in the 21st century.

Erosion and time have created a naturally-formed water park.

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

Giant granite rocks standing end-to-end like a train of circus elephants.

The world's largest collection of the world's largest objects is in one small Illinois town.

This alley-cum-fan gallery in the ex-Nirvana drummer's hometown holds the world's largest drumsticks.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

In what is rumored to be an intentional act of spite, this memorial almost completely obscures the nearby grave of a senior officer.