Ethereal alien hums and haunting whale songs emitting from...a giant sheet of vibrating metal?

The world's largest collection of porcelain "veilleuses-theiere," or night light teapots, includes four that belonged to Napoleon.

This popular park is home to a sea serpent sculpture that now overshadows the twisted history of its creation.

The site of the one of the most deadly train wrecks in American history.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The largest and most well-preserved petroglyph site in the Verde Valley.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

This 24-acre park offers a place for meditation in the midst of Sedona's iconic red rocks.

This conservation area is also home to many of the region's desert tortoises.

The blinking light atop the iconic landmark has been sending secret messages for decades.

Four hundred granite steps were built into this massive rock by the National Park Service.

Colorful Native American paintings are hidden within this small cavern.

An Airy Would-Be Solution to a Housing Shortage.

This odd California folly seems like it was almost designed to accumulate urban legends.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

A music-filled, booze-soaked oasis in the desert.

The sun acts as a key that only fits this giant keyhole twice a year.

A private home built to resemble the shape of a microscopic creature.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

This symbol of peace is appropriately positioned overlooking the Pacific Ocean.

The location of the last stand of Charles Manson's doomsday cult.

A quirky collection of figurines backdropped by city views is hidden next to a popular restaurant in the Hollywood hills.

Dozens of feral felines rule a segment of Hollywood's only graveyard.