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 fossilized remains of ancient California redwoods.

340 bicycles, 65 feet high.

'Cause the fence start shaking, the earth was quaking.

This abandoned boat was left in place thanks to its rotting beauty.

An optical illusion found amid a logged redwood forest.

Elevated freight railway turned wildly successful urban park.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

Take a dip in the world's largest mineral hot springs pool.

There are eight natural springs around town, each with a slightly different taste.

A monument dedicated to the civil uprisings that took place during the Pots and Pans Revolution.

Iceland's tribute to its thankless civil servants.

Medicinal spa created with the discharge from a geothermal energy plant.

In Northeastern Iceland lies something of an oxymoron: a steaming desert.

A sulfuric martian landscape that looks far better than it smells.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

It's beautiful, it's haunted and its claim to fame is that it's the oldest existing stone arch bridge in Australia.

Native Australian lizards inhabit this garden celebrating Sydney and its sister city in China.