The seamy, underground secrets of Portland's criminal past.

A museum and shop on Bourbon Street located in the French Quarter.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Stroll through a wonderland of stupendous moss-covered trees.

Resting place of Hollywood's immortals is also site of summer film screenings.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The highest point in Washington state is a volcano covered in glaciers.

The highest point in Texas is capped by a big silver pyramid.

The highest point in Nevada had to be decided by court order after California tried to claim it as their own.

Roaming bison and a spectacular view at the highest point in Nebraska.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

The highest point in Louisiana, Driskill Mountain at 535 feet above sea level.

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

A large stone map of Arkansas awaits visitors to its highest point.