Downtown Minneapolis mixed art and function by turning some of their sewer covers into works of art.

The only arched bridge made of stone on the entire Mississippi River.

When flour explodes, it's not a pretty sight.

This small, nautical gift shop is home to a 500-pound behemoth.

See prehistoric footprints, plus two complete mastodon skeletons.

This restaurant's specialty is "a major enigma for food historians."

A diverse, expansive nature preserve in northeastern Kansas.

The lasting remains of a bygone era of open-air meat markets.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

A jukebox headstone marks the grave of the Cleveland disc jockey credited with coining the term “rock 'n' roll."

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

Superfans of The Shawshank Redemption can take a driving tour of most of the films real locations.

These statues pay homage to the "green corridor" of parks and wetlands.

This painting of a beloved dog will be on display at the Scottish National Gallery at long as the museum exists.

Inside the Wayne County airport is an amazing collection of lights and sounds.

A defensive structure built during the Hundred Years War has remained useful in one way or another for nearly 700 years.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

One of the world's oldest trees comes with a Welsh legend intertwining it with a spirit prophesying death.

This elaborately-carved white marble fountain was built to stand outside the Detroit Opera House.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

The lecture hall where Alexander Graham Bell first demonstrated the long-distance phone call.

Historic Hull Street was actually the first street with a proper name in the Boston area.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."