Moonbows over Kentucky.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

From scholastic to sepulchral - now under reconstruction.

A sculptor's dream castle turned fantastical ruin.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

Stay in a room with a view... of the bottom of the ocean.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

The longest navigable underground river in the United States is home to countless blind and albino animals.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

Travelers exchange letters with woodland creatures at this mini post office.

A whimsical village of unique treehouses resides in a Washington forest.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

The beauty of urban decay, hiding some dark secrets.

Legends surround this jagged rock formation in the New Mexico desert.

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

Treehouse motel and treehouse-building school.

One of the last Jazz Age "Wonder Theaters" in New York City.

Storyville was New Orleans' historic red light district and hotbed of jazz music, sometimes referred to simply as "The District."

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

Yale University's home for rare works, including the mysterious Voynich Manuscript.

A giant 400-acre preserve in North Florida for displaced wolves.

The largest permanent Monopoly board makes one of the longest games even bigger.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

A hollow cement depiction of time's inexorable effect on the human body.