A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.

One of almost 200 confirmed impact craters in the entire world, untouched for tens of millions of years.

Approximately 50,000 gallons of water gush from these springs, creating the Metolius River.

The location of the Bridge of Death and the Gorge of Eternal Peril in "Monty Python and the Holy Grail."

Built in 1347, this belfry is one of the oldest in the world and survived intense bombing during World War I.

This contemporary art museum is filled with other, smaller museums, which feature work from artists primarily in the Pacific Northwest.

Away from the crowds of fishing enthusiasts, take a hike deep into the woods and journey into an eerie darkness.

An abandoned railroad tunnel transformed into a creepy path for hikers and cyclists.

A moving tribute to a leader of the American abolitionist movement.

Don't be surprised if you see a long-necked dinosaur peeking out from among the trees in Northgate Park.

One of the oldest carousels in the United States is still running in the coastal village of Watch Hill.

After the oysters have been shucked, and the restaurant's been shuttered, the terrazzo sidewalk from the 1940s is all that remains.

This supermarket offers shoppers a window into the past alongside their groceries.

This ruined fort and statue are a testament to the last king of Kaua‘i’s savvy diplomacy skills, which briefly brought Russians to Hawai‘i.

One of the finest examples of a black soil prairie that was barely saved by the Great Depression.

As the glaciers retreated out of northern Wisconsin, this unique natural wonder was crafted.

Randy Senna's Fascination and retro arcade is home to the last Fascination game in New Jersey, and one of seven remaining as of 2021.

A train tunnel that was made obsolete by the dam it helped create.

This historic hiding place, often used by people escaping slavery, is a testament to a heroic struggle for freedom.

This suburban park recalls the history of a famous tavern. Despite the name, it's no ordinary place!

A creek tumbles over a series of step-like rocks to create this scenic water feature.

A lighthouse on this West Virginia lake started as a joke, then the forces of nature helped make it a reality.

More than a century old, this trading post resides in the Navajo Nation.

With a floor made of thick glass, this observation deck offers a full view of Sunwapta Valley's mountains and rivers.