This Old Testament garden features 100 plants from biblical times.

A larger-than-life statue of America's favorite sundae marks the place it was invented.

These disused steel furnaces are now haunting ruins that may one day be a national park.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

This dramatic rail curve was once the target of a failed Nazi attack.

A statue honoring 44 continuous years of greeting passing ships.

The ruins of one of the first railroads in the U.S. lie hidden within a neighborhood cul-de-sac.

The South's nickname was supposedly born at a former bank in New Orleans' French Quarter.

The start of the group that straightened the teeth of a nation.

Haunted Victorian house that inspired a legendary "Ghostbusters" court ruling.

This tiny church near Sleepy Hollow contains Henri Matisse's last work, a rose window, and nine windows by Marc Chagall.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

Over 50 whirling pools left behind from the glacial age.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

The oldest living cultivated fruit tree in North America.

The homestead of American patriot John Adams.

An exotic wildlife habitat right off The Strip.

The oldest continuously inhabited street in America.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

The oldest surviving botanic garden in the United States.

One of America's first spies started out as a teacher in this little red one-room schoolhouse.

A monument to the military service of America's greatest traitor refuses to even name him.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.