Descend into the world’s longest-running deep anthracite coal mine.

The beginning of the historic Iditarod Trail connecting the Alaskan cities of Seward and Nome.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

Considered by many to be one of the most dangerous highways in Alaska.

This Alaskan town appoints the general store's resident feline as honorary mayor.

The king of U.S. high points towers over every other peak on the continent.

The Liverpool street made famous by the Beatles is real.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This one-room schoolhouse played a significant role in the education of Black children for almost 100 years.

Both the building and blades of this reconstructed 19th-century windmill can turn in a breeze.

This Harriet Tubman mural went viral for kids interacting with it.

Historic home of America's sweetheart sharpshooter, Annie Oakley.

This statue honors the author's groundbreaking family story.

This tiny church near Sleepy Hollow contains Henri Matisse's last work, a rose window, and nine windows by Marc Chagall.

The real-life site of Ichabod Crane's infamous gourd attack.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

Designed to commemorate the founding of the first settlement in Delaware.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.