The Ozarks' strangest dwelling.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

Along the historic Mother Road is an old gas station with a secret counterfeiting past.

From a supper club to a gay bar to an HBO shooting location, this 125-year-old Victorian mansion has lived many lives.

The only international border marker within the United States.

American bison herd descending directly from a Bronx Zoo breeding program that saved the species from extinction.

Campus tradition says couples who walk beneath this enormous oak will stay together forever.

Decades of discarded bottle caps line this alleyway, a fixture of Texas A&M.

In Paris, Texas they have their own Eiffel Tower, it just has a cowboy hat on it.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

Official museum, hall of fame, and repository of the Texas Rangers.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

The "world’s largest honky-tonk" also has its own indoor rodeo arena.

Belly up to the bar in Cowtown, don't forget to buy some boots.

This family cemetery is a reminder of a smallpox outbreak in late-19th-century Texas.

This strategically-placed fountain creates the magnificent illusion of mustangs galloping across a river.

This propitious plastic porcine has been petitioning park visitors to pick up after themselves for more than 50 years.

This mighty white oak in Bethesda survived both the American Revolution and the construction of Washington D.C.'s metro red line.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

FDR's Art Deco hospital tower was hopelessly inefficient.

The oldest military monument in the United States.

These unusual rooms on wheels are holdovers from the 1960s.

The grave of a champion Thoroughbred hides within the former presidential estate.