Believed to be the country's tallest waterfall, the Njupeskär is actually much smaller.

The world's oldest individual clonal tree looks like a wimp despite standing tall for 9,550 years.

Said to be one of Sweden's most haunted places, this vicarage once even attracted a ghost-busting priest.

Contrasting the old concrete courthouse beneath, a modern and colorful residential marvel has emerged, stirring both acclaim and controversy.

The world's largest underground iron ore mine.

A devilishly named gorge that was a sign of salvation for many pioneers.

A popular rock that acted as a waymarker for American pioneers.

The first declared National Monument in the United States.

An antique Beechcraft airplane serves as a giant windsock for people driving through the blustery open country of eastern Wyoming.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

The only retired U.S. nuclear missile silo that is open to the public.

One of the smallest towns in the United States.

Miraculous tree that seems to sprout out of solid rock.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

A colossal gold-dredging machine from the Klondike mining boom, now open to tours.

The northernmost international land border crossing in the United States.

A giant poultry statue immortalizes one of Alaska's more humorous town names.

This super-sized statue is the only public memorial to the deal that ended America's neutrality during World War II.

Once the center of Gold Rush mania, now the starting point for the Yukon Quest sled dog race.

This mile marker stands at the unofficial end of a highway built to defend the United States from a Japanese invasion during World War II.

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

A sarcastic monument threatens to curse any "idiot" who dares remove it.