Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

Florida’s half-sized replica of the Vietnam Veterans Wall.

A local landmark with generations of spraypainted messages, and more being added each day.

This missionary's legacy looms large over the Upper Peninsula of Michigan—literally.

Nestled near the mountains of western Canada resides this behemoth earth mover.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

This candy-striped tower is the farthest east you can go in the United States.

This park straddling the United States-Canadian border has been a symbol of peace since 1932.

A stone face watches over the river.

This colossal reptile celebrates the history of the now-defunct Canadian Turtle Derby.

An outcropping plays host to the largest collection of pre-contact petroglyphs in Saskatchewan.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

A place for ship-lovers to watch the passage of freighters traversing the Great Lakes while learning about their history.

A sacred Ojibwe site covered in pictographs next to Lake Superior.

This rustic old building is said to be the most photographed barn in America.

The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

The fifth-longest natural arch in the world, and the longest outside China.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

The ravine where Jesse James supposedly performed an impossible jump to evade capture.

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

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.