Guns that have been defending San Francisco since 1904.

Standing in for the first ship to navigate the Northwest Passage.

The famous aviator's final resting place is a study in natural beauty.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

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

This plaza at the end of the world teems with monumental tributes to a problematic history, and laser discs.

Russian Orthodox church built on an Antarctic island.

The best place to send your postcards home from Antarctica.

An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.

This Parisian gem is one of the most incredible ethnographic museums in the world.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.

Historic site where Native American hunters once trapped and killed buffalo.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

Few other hotels can rival the grandeur of the Castle in the Rockies.

America's largest man-made forest was planted in an effort to bring back the past.

This UFO landing strip was created by a charitable Wyoming city that was worried about residents of Jupiter.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

When ecosystems collide in the arid Southwest.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.