These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

This pebble beach is so beautiful that taking its rocks is against the law.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

An intricately carved Viking church overlooks a glistening fjord.

Home to three historic ships from the age of Vikings.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

Local stories say that if you drink from this well, you will return to Olympia.

More than 500 years after his death, a medieval ruler's remains were found buried under a parking lot.

Exploring the past, present, and future of blues music.

This distinctive bug-like bridge is made of recycled horseshoes.

A mural recalls a fictional woman who once lived at 23 Quai du Commerce, 1080 Brussels.

Sculptor Vadim Bora's bronze felines pay playful homage to architectural features no longer extant along Asheville's Wall Street.

View Japan's most historic city from a cyberpunk walkway suspended 150 feet above the ground.

This landmark honoring a local beer brand is an iconic part of the Minneapolis skyline.

A cornucopia of gargoyles adorns the oldest portion of Oxford’s Magdalen College.

On the side of Christchurch Mansion is an enigmatic block of dark limestone that dates back to 14th-century Belgium.

A monument commemorating how a frontier town got its unusual name.

A seemingly out-of-place comic book surprise sits on the 21st floor of the tallest university library in the world. 

A black cottonwood gets a second life as a home for books.

Cross the Continental Divide through an old railroad tunnel, and ride back to the top on a shuttle.

A volcanic core jutting above the plain between the Snake and Boise Rivers, a marker identifies the reference point for all U.S. Government Surveys in Idaho.

A former sanitarium where soldiers were sent to recover in the healing waters of hot springs.

An impressive waterfall nestled in the cliffs of Idaho's Snake River Canyon.