This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”

A natural formation that resembles a camel resting in the New Mexico desert.

An early-19th-century hotel with a past that is steeped in the Civil War.

Here be dragons.

One of the most dazzling dioramas at the American Museum of Natural History is also one of the oldest.

A giant concrete churn carries the legacy of American resilience, unity, and greed.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

This morbid scene depicts the Darwinian drama of death on the African savannah.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

One of the few working locomotive roundhouses in the United States.

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

A small collection of iguana-infested ruins hides amid Cancún's bustling hotel zone.

The structure has welcomed visitors to this scenic harbor city on Lake Michigan for many decades.

The remains of a World War II-era Japanese American internment camp dot a windswept Colorado hill.

A giant lumpy candle serves as a beacon for this highly scented pit stop.

Try your hand at old-fashioned coffee growing at this museum devoted to one of the world's most coveted beans.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

This legendary urban waterfall creates a dazzling display of rainbows.

This tremendous trout welcomes visitors to a northern Michigan town with a rich fishing history.

An abandoned stretch of highway, deteriorating next to the operational one.

This Art Deco service station has been providing tune-ups and turning heads for close to a century.

One of few surviving standpipe water towers in the U.S.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

This impressive scene portrays the elusive forest giraffe of Central Africa.