At just 25 inches at its narrowest point, it's one of the tightest streets in the world.

Two giant painted cooling towers make for one of the world’s most epic bungee jumps.

Legend says lovers who hold hands while venturing along this stone jetty and kiss at the end will remain together forever.

Ruins battered by centuries of war and disaster offer a wondrous glimpse of medieval Ireland.

The world's oldest grape-producing vine has survived four centuries of turmoil and even has its own anthem.

The only place in America where anyone who wants can shovel coal aboard an antique train.

The first park built over a freeway is a brutalist masterwork.

A brick-paved former section of the historic coast-to-coast highway.

All that remains of Jacques Cousteau's 1960s underwater "village."

Windswept and remote, this island was once the home of a rare mammoth and today is home to a rare tree.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The Grand Canyon of Texas.

England's foremost purveyor of funeral furniture hasn't changed a bit since the 1960s.

Thousands of unique minerals, including some of the most impressive fluorite crystals in the world.

Britain’s longest ancient monument, this great 8th century earthwork was built to mark the boundary between what would become England and Wales.

Underwater volcanic eruption forms new island off the coast of Tonga.

This Old West eatery along America's Loneliest Road was originally a stop on the Pony Express.

An abandoned asylum where patients have been forgotten but their possessions remain.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

The Arctic Archipelago is home to world's largest third order island: an island in a lake on an island in a lake on an island.

The remote graves mark the mysterious deaths of four 19th century explorers.

The closest thing to Mars on Earth.

Rare mummified forest could offers a glimpse into how our environment has been changed by humans.

A Cold War atomic camp buried under the ice is now emerging because of global warming.