A monument to one of the few Olympic flames ever to be lit outside of the host city.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

These markers are used to document elevation changes around the famed dam.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Community bookshelf of 25-foot-tall book spines.

A eclectic collection of military memorabilia.

This Nebraska museum was once the smallest courthouse in America.

After sitting abandoned for decades, this historic mine is now the only publicly accessible chalk room and pillar mine in North America.

Once a slice of Cold War-era military history, this museum is finding its future in the stars.

A physical reminder of Earth's ancient past, this rock results from the photosynthetic processes of some of the oldest forms of life.

Its floors are marked by colorful cues depicting Michigan's native fauna.

Trade in that pesky human soul for cold-hard circuits.

The city is full of whimsical portals to another world.

This sculpture is a cross between an observatory and an earth mound to honor the community's rich history.

Pennsylvania's own Roswell-style UFO mystery.

A wonderous place devoted to art and metal.

Dedicated to one of the most successful boxers to compete in the heavyweight division.

Beautiful views of the surrounding hills and birds of prey can be found at this sanctuary.

An allegedly cursed tree represents a town's reckoning with a racist past.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

Once America's longest-manned military fort, now an abandoned hulk.

These mystical miniature houses bring a touch of magic to the New Jersey woods.

This simple Manhattan salt house is artfully shaped... well, like a giant granule of salt.