A winding, blood-red tunnel of hardened lava navigable by foot.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

Once America's tallest structure, now a Baltimore landmark.

A massive sustainable farm designed by the mastermind behind Central Park.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

A bizarre house filled with an astounding array of collections.

This cave holds a surprisingly colorful variety of geological oddities.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

Quite simply the largest tree in the world (by volume).

This historic old movie house was the scene of one of the Blob's most iconic attacks.

This charming English house was once the home of England's most famous poet.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

The most magnificent bottle house in a town strangely full of them.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

An optical illusion found amid a logged redwood forest.

This massive redwood tree has a hole in the base big enough to drive through.

A collection of colorful dinosaurs hidden in an actual rainforest.

Mysterious rocks that ring musically when struck.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.