These otherworldly limestone formations jut out from the Kansas prairie.

The 55-pound trichobezoar was removed from the stomach of a cow.

This lesser-known geographic marker was the reference point for all surveys of the continent for 75 years.

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

Curious rock formations in a tiny Kansas state park.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

These elevated trucks were put in place as a middle finger to The Man, but are now considered folk art.

Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

A 200-year-old bar is all that remains of one Mississippi River town's rough-and-tumble past.

A dramatically eroding canyon thousands of miles from the desert.

A preserved stretch of ancient fossilized trees with an impressive gem collection to boot.

This racially troublesome eatery thought a new coat of paint could erase its offensive connotations.

Built following the War of 1812, this fort has withstood hurricanes for centuries.

This two-room shotgun shack in Tupelo is the birthplace of a King.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.