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

San Francisco's newly reopened hands-on science museum.

Odd outsider art installations surround a Gold Rush-era ghost town.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Famously misunderstood wonder of the ancient world

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

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

A beautiful geyser under environmental threat.

The world's longest known cave system.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

The first declared National Monument in the United States.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Home to items never before seen by the public.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

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

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant