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.

The remains of this visionary community can still be found much as it was a century ago.

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

If all members were present at the table, a sixth of the world's wealth would be under the same roof.

Ruins of a once-prized railroad station in New York.

From golden eagles to peregrine falcons, this rehabilitation and education center is a haven for birds of prey.

An abandoned gun-funded 19th century utopia.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

World's largest herd of white deer populate a former U.S. Army depot.

The world's largest fully steerable radio telescope.

The end of times arrives, at least for the fish in the O.C. Fisher Reservoir.

Hidden in magnificent rolling countryside, see what may be the largest modern stone circle in the world at Wisconsin's very own "Stonehenge”

This rocky spread has been squeezed up directly from the bowels of the earth.

What happens when a chef with indigenous roots takes over a hotel-restaurant?

Roadside collection of 65,000 signs.

The water swaps direction twice a day, whipping into a frenzy of whirlpools and rapids.

How would you like to dine in the same room where some of the Titanic's victims were embalmed?

Every four years, millions of salmon fill a river so densely that its waters appear deep crimson.

These hellish-looking cliffs in the Canadian Arctic have been burning for centuries.

This natural wonder is disappearing at an alarming rate.

Every fall this lake mysteriously drains, like a bathtub with the plug pulled out.

A long-forgotten Victorian swimming hole is still a fun spot for a dip.

Duluth mineral magnates built this charming art deco lodge to be their private clubhouse.

A charming remnant of 19th-century fishing towns sits on Michigan’s Leelanau Peninsula.