Nebraska’s longest-running summer theater is a musical tribute to cowboy culture.

This old-school soda shop is the home of the Tin Roof Sundae, a concoction dripping in chocolate, marshmallow, and peanuts.

After sitting abandoned for decades, this historic mine is now the only publicly accessible chalk room and pillar mine in North America.

A museum chronicling pioneer life constructed over Interstate 80.

Four ionic columns from the Treasury Department building ended up in a park in Nebraska.

This was the first homestead registered after President Abraham Lincoln signed the Homestead Act into law.

This replica small town lets visitors take a stroll through the story of progress in the U.S. via thousands of Americana artifacts.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

A brick-paved former section of the historic coast-to-coast highway.

America's smallest town is run by its single citizen/mayor/librarian/bartender.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

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

This single room has survived the centuries with almost no deterioration.

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

A natural sandstone bridge nestled within a mature forest in southern Illinois.

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

Man-made geyser that rises to the exact height of the Gateway Arch.

The oldest soda fountain in St. Louis has been serving up treats for more than a century.

When Joseph Marconnott died, he had a unique final wish: to be mummified and put on display.

This mausoleum is the final resting place of one of St. Louis's richest and most tragic families.

Though it's thrived abroad, this forgotten Dunkin' rival has just one store left in the States.

A wax effigy of St. Valentine hides one of the saint's relics.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.