A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

One of the oldest living oak trees in the Southeast.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

A unique botanical garden housed in three giant geodesic domes.

Legend says Dungeons and Dragons players can get their dice blessed at the creator of the game's memorial.

Designed by Alfred Caldwel, this landscape showcases his vision of a native garden.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

10,500 square feet of pinball housed in former dollar store and home to the last playable "Thunderball."

The last funhouse of its kind, where guests enter through the mouth of an 80-year-old blue whale.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

One of the greatest boxers and humanitarians to ever live chose his hometown as his final resting place.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

Marine fossils from the Devonian period are exposed at this park.

In an odd geographic anomaly this city borders two different states on opposite sides of town.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.