Watch the newest land on the planet form before your eyes.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

See massive fossils that are over 200 million years old in northeastern Arizona.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

A wondrous old library overlooking the nation's capital.

An abandoned warehouse turned art sanctuary in New Orleans.

The stone labyrinth in this New Orleans city park was laid to symbolize healing in the wake of Hurricane Katrina.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

Parts of the civil rights movement unfolded in this historic eatery, helmed by the "Queen of Creole Cuisine."

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

New Orleans' famous cemetery, located on the site of a former race track.

This Hindu temple in suburban New Jersey is the largest in the United States and one of the largest in the world.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

Mysterious rocks that ring musically when struck.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

The only building in the western U.S. designed by the Finnish architect Alvar Aalto.

Post office plaque commemorates local resistance to a cult invasion.

A Roman-style column in Oregon hides a spiral staircase inside.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

A massive sea stack famous for its appearance in The Goonies.

This charmingly homemade amusement park has been growing for 40 years.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.