The castle still holds traces of the abandoned Roman fort it was built atop.

A trash dump made beautiful by nature's power.

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

An optical illusion found amid a logged redwood forest.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

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

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Folk art crafted from discarded vegetable crates.

Canyon walls shrouded in ferns.

Commonly referred to as the most photographed Victorian home in the United States.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

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

Protecting the dead from opportunistic body snatchers.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

A cluttered and astounding collection of antiquities and curiosities.

The taxidermied remains of a once-great parrot.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.