The first and only carousel with a lineup entirely of insects.

This mysterious marker puzzles pedestrians and infuriates geographers.

A rural hall of justice holds the world's only comic book and superhero museum.

Open-air cremations in Colorado's self-proclaimed spiritual mecca.

Community owned and operated, this property is home to a diverse set of nudists.

Colorado's only active volcano last erupted around 4,000 years ago.

The final resting place of a legendary science fiction author and his fraternal twin sister who died as an infant.

On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.

This erect, phallic geological spire wasn't always named so domestically.

An obelisk commemorating Lincoln's role in connecting the coasts.

This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

Piled high inside this warehouse and coffee shop are salvaged goods that span every corner of the globe.

This edible park is open to any and all foragers.

A nondescript Seattle restaurant inherited a piece of European history.

Peruse rare tomes like poetry bound in pearls or books with branches and berries growing out of their spines.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

This Catskills museum preserves stumps from the earliest known fossil forest on Earth.

Glacial erratic or man-made dolmen? It probably wasn't druids.

100 massive sculptures in the Hudson River Valley.

The largest Buddha statue in the Western Hemisphere is just 50 miles north of NYC.

The largest known open fault in the United States is basically a giant natural refrigerator.