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

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Where manatees are the snowbird vacationers in these balmy Florida springs.

San Diego's most historic and haunted home.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

Museum dedicated to awful artwork.

One of the oldest living oak trees in the Southeast.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

An astounding collection of medical specimens, including bits of President Lincoln.

An extraordinary mixture of natural beauty and man-made phenomena.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

European castle ruins in an American state park are actually the product of death and grief.

The oldest surviving synagogue in New York City is now a soaring art space.

An enormous park-like oasis, full of famous Chicagoans' graves.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Outsider art meets paleontology at this roadside reptile repository.

A Saint Nicholas-themed ghost town in the Mojave desert.

A long abandoned hospital building on the outskirts of NYC.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.