This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

At 238 feet above the bottom of a gorge this span is known as the biggest thrill on the road to McCarthy.

Locals believe the purity of this huge, untouched Arctic lake could be the salvation of human civilization.

The ghostly remains of what was once the world's richest copper mine.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

Concrete pillars provide a beautiful canvas for Quebec City's graffiti artists.

The floating gallery illuminates the heart of Québec City's arts district.

This Quebec estate is home to the elaborate gardens of a self-taught horticulturist.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

An unrecognized nation-state created in the 1820s to avoid taxes.

Hidden among the trees at the Rangeley Lakes Trails Center are more than 20 gnomes in small wooden houses.

A unique sculpture garden nestled among farm fields.

A reconstituted ancestral village of the Huron-Wendat Nation.

One man's homage to the sun continues to grow like a glass fractal.

Swim or sail to this pie-slinging boat off the coast of St. Thomas.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

A classic carnival ride that was carved to be untouchable.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

The huge collection of paintings of the American West is one of Denver's best-kept secrets.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

This historic street in Quito is known for its seven stone crosses—and one presidential assassination.

During an annual Catholic feast in this tiny Spanish village, men dressed as devils leap over rows of babies to cleanse them of sin.