An idle pastime becomes a record holder in Boys Town, Nebraska.

The United States's largest hand-dug well is topped with a state-of-the-art museum.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Dramatic river bend surrounds a natural red-rocked pedestal.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

Only known mainland rookery of the threatened Stellar sea lion.

Where Nor'easters go to die.

100-year-old shipwreck you can walk up to at low tide.

A beautiful 62-acre Catholic shrine and botanical garden.

An extraordinary mixture of natural beauty and man-made phenomena.

The seamy, underground secrets of Portland's criminal past.

A clear blue swimming hole with hidden caves, still unexplored.

17,400 lbs., 12 feet in diameter, and 29 years in the making.

Elaborate drama imparts an appreciation for 19th century hardships.

Known as "The Hill of the Little Devils."

The only road through the heart of Glacier National Park.

An architect's childhood fantasy treehouse made real.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

After Havre burned down, the best place to build was under the ashes.

The ancient tomb acts as a calendar that keeps perfect time.

Pop culture has helped to keep this iconic British building from being destroyed.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.