At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

A Bibliophile's Dream.

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

Every winter, water dripping from a pole creates an ever-changing ice sculpture.

These grassy undulations on a stretch of University of Michigan campus aren't bad landscaping, they're art.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

An ever-evolving wall of graffiti art off East Liberty Street.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

What was once the largest NFL stadium.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

The city is full of whimsical portals to another world.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

A public urinal so pretty, it was declared a national monument.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

The world's longest known cave system.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

An exotic wildlife habitat right off The Strip.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.