This geothermal hot spring hides beneath a slowly growing mineral dome.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

The skeletal white beams stand as a monument to religious dissent.

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

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

This popular pilgrimage site offers a hole filled with holy healing dirt.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

This small piece of railroad history sits behind the parking lot of a chain grocery store.

The highest bridge in America was built for an almost unnervingly small amount of money.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

This hot dog-shaped diner has moved all around Colorado, but has never been to New York.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

This museum offers an actual time machine back through Colorado's past.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

The resting place of a Civil War celebrity's amputated limb.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.