This massive redwood tree has a hole in the base big enough to drive through.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

Only known mainland rookery of the threatened Stellar sea lion.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The ruined remains of an early hydroelectric dam.

Fossils, railroads, and waterfalls!

A six-ton wedding present for the King of the Scots.

The final resting place of soldiers' loyal canine companions.

The most loyal of little dogs, or a Victorian era publicity stunt?

A 18th century graveyard and its astonishing cortege of macabre iconography.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Northern Ireland's Brobdingnagian stepping stones.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Train tunnel running underneath Quebec City.

Surprisingly delicious Asian-style hot dogs.

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

New fungal and bacterial species call this deadly lake home.

The only road through the heart of Glacier National Park.

Nestled near the mountains of western Canada resides this behemoth earth mover.

A sleepy little town that had the greatest landslide in North American history fall on it.