Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

A controversial memorial at the place where Captain Cook met his violent end.

This blowhole is supposedly caused by a trapped monster.

The magic's in the hole!

This geothermal hot spring hides beneath a slowly growing mineral dome.

This expansive bridge in the Canadian wilderness was originally just built for friends.

An optical illusion found amid a logged redwood forest.

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

A collection of colorful dinosaurs hidden in an actual rainforest.

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

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

An ancient knight and a symbol of the city's freedom.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

A museum dedicated to the history and exploration of both popular music and science fiction.

A wall of chewing gum moonlights as collective art.

A walk through the historic city center, under the streets of Seattle.

Scattered throughout London are ancient remnants of the city's former bounding wall.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Hear the quietest sound from across the dome.

San Francisco's newly reopened hands-on science museum.