Mysterious rocks that ring musically when struck.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

A winding path built in secret on the edge of the continent.

A giant Troll lurks under one of Seattle's oldest bridges.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

A bizarre house filled with an astounding array of collections.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Dramatic river bend surrounds a natural red-rocked pedestal.

An enormous, inside-out glass globe built in 1935.

An emerald-green grotto just a short trip from Austin.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Rippling sand dunes frozen in the Arizona rock.

A huge musical instrument played by the ocean.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.