A beautiful geyser under environmental threat.

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

The first declared National Monument in the United States.

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

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

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

Order scoops of pandan, lychee, and black sesame at this family-run institution.

A dilapidated dock tells the story of Titanic's missed arrival.

This abandoned amusement park was built on a site with a dark history.

Eighteen miniature death-scene dioramas.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Home of an evil witch famous within southern folklore.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

Mysterious rocks that ring musically when struck.

Where America's first doomsday cult awaited the end of the world.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

The United States Capitol's former columns still stand.

A house carved into a rock in the 1940s.

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

Enormous lake at the bottom of a unique cave system.

A miniature rainforest is growing inside of a Midtown Manhattan office building.