This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

The highest point in Iowa, while not that impressive to mountain states, has earned its own monuments.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

This striking art museum holds an amazing series of curiosity cabinets.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

In rural Iowa, an imported 19th-century windmill overlooks an unlikely enclave of Danish culture.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

This simple home was the beginning of a long journey for the iconic Western film star.

Piled high inside this warehouse and coffee shop are salvaged goods that span every corner of the globe.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

A distillery built on (and above!) mobster Dutch Schultz's Prohibition-era underground moonshine business.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

This erect, phallic geological spire wasn't always named so domestically.

The first declared National Monument in the United States.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.