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

The celebrated eyesore created by starry-eyed sweethearts.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

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

The private clubhouse for the members of the Academy of Magical Arts.

A reproduction of earth's many biomes.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

A mysterious castle built as a monument to lost love.

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

This shop for all your super spy needs hides an educational secret.

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

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

A hotel and restaurant serving as the mecca of kitsch.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The first declared National Monument in the United States.

Odd outsider art installations surround a Gold Rush-era ghost town.

A hand-built folk art installation covered with messages of God's love.

A strange house built only at night, with rumored mystic inspiration.