A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

Artist James Turrell's ode to dawn and dusk on the campus of Rice University.

The end of times arrives, at least for the fish in the O.C. Fisher Reservoir.

A little stop along the Texas highway where Rock Hudson, Elizabeth Taylor, and James Dean stayed while shooting the 1955 film "Giant."

These half-buried combine harvesters just off Route 66 are an homage to the Cadillac Ranch.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

This naturally-sourced hot spring is now home to a clothing-optional resort.

Dance on a hand-hewn log floor padded with bouncy boxcar springs at a saloon built in 1883.

The highest point in Maryland is only accessible by hiking through another state.

One of the Treasury Building's original columns now sits as a garden monument in the middle of a busy military base.

An abandoned textile mill that is now home to art and concerts.

The final home of the most famous horse of the American Civil War.

Remnants of a wall built to separate Black residents of Hall's Hill from a newly built subdivision are a grim reminder of segregation in 20th-century Virginia.

The last early 20th-century schoolhouse in Fairfax County has galvanized the community and engendered a spirit of service among residents.

America's first federal monument.

This sprawling museum holds one man's giant collection of real tanks.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

A forest wonderland caused by Burlington, Vermont's aggressive southwestern winds.

10,000 flowered plants bloom in the City of Roses.

This abandoned boat sits on a nude beach, is shaped like a UFO, and is covered in graffiti.

Only known mainland rookery of the threatened Stellar sea lion.