Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

A chapel built by Italian POWs during World War II tells a forgotten tale of the war on the home front.

You thought Santa Claus didn't exist, but it turns out you were wrong.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

This unassuming home was once “grand central station” for the Underground Railroad.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

These ancient sacred grounds granted amnesty to those who managed to reach them.

A Hawaiian stairway to heaven—that you can't climb.

Siberian husky that delivered a life-saving antitoxin.

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

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

A historic freight system that found the true gold rush is in tourism.

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

A 125-meter long "tribute to the Brazilian people."

An art museum with an eclectic design and a scandalous past.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

Neo-cave art on the macro scale.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

The most playful of the life-sized statues that make up Singapore's "People of the River."

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.