The first declared National Monument in the United States.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

The oldest restaurant in Portland serves fiery coffee cocktails and an astounding amount of turkey.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.

In a pedestrian tunnel on North Carolina State’s campus resides an expressive and artistic free-for-all.

This historic oak tree has been around for over 300 years and might last for 300 more so long as it doesn't fall apart first.

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

An ode to "The Queen of Appalachia."

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

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

One of the few surviving original NASCAR dirt-track speedways.

Two Civil War-era cemeteries stuck between runways at the world's busiest airport.

It’s all about the Benjamins at this Atlanta museum with interactive exhibits.

Georgia’s last drive-in movie theater is a relic of a bygone era.

A little-known mural reveals the hydrological reason for Atlanta's founding in this location.

The first integrated firehouse in Atlanta houses a museum on the history of desegregation in the city's fire department.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

The grandiose interior of this bar speaks to its past as home to famous jewelers and railway offices.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.