A memorial to a larger-than-life legend, inside a county that also holds Bunyan's death certificate.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

This institution celebrates the happy accidents of uncommon sticktoitiveness.

The highest cold-water geyser in the world.

The only diamond mine in the world where you can keep what you find.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

For those late-night mollusk cravings.

This sky-high radio mast is formerly the tallest man-made structure in the world.

The remnants of an early American attempt at missile defense.

The Internet Age began with a transmission from this biker bar.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

A 115-year-old restored German dining hall awaits those who venture beneath the Minnesota State Capitol.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

The easternmost town in Alaska can only be accessed from Canada.

Walk 2,300 feet above the ground on the "Troll's Tongue."

The last fully functional fortress of Germany's World War II Atlantikwall.

A reconstructed farm shows what life was like in Norway 1,500 years ago.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

Norway's oldest cathedral still in use.

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.