Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

2300-year-old Roman road connecting the empire.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Walk 2,300 feet above the ground on the "Troll's Tongue."

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

The ancient tomb acts as a calendar that keeps perfect time.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Indents in the pavement are all that remain from a grisly death machine in Paris.

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

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

The longest living non-clonal organisms on Earth.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

A fantastic castle rumored to be the birthplace of King Arthur.

This Elizabethan hedge maze is one of only six in North America.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Spend the night in this formerly abandoned traditional Scottish village.