Tiki luxury on Nob Hill.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

What is the Thing?

All that's left of the quintessential "cabin in the woods."

Even Henry David Thoreau found this glacial pothole irresistible.

In the middle of the desert, miles from any human life, sat an anomalous pay phone that still magically answers your calls.

This massive subterranean fissure is known as the "underground Grand Canyon."

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

This iconic science fiction house still looks like something from the future.

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

Two churches shoot bottle rockets at each others' bell towers in an unusual Easter celebration.

Why have you never heard of the second most popular tourist site in New York?

These millipedes glow not out of attraction, but as a not-too-subtle warning.

This massive mushroom has spent centuries eating its way across a huge swath of Oregon.

Tubing through a cave lit with glowworms is a magical underground experience.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.