Impressive sink holes fill this untouched old-growth forest in the Bahamas.

A small museum in the Bay of Pigs gives the Cuban perspective on the famously failed U.S. invasion.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

The house that birthed The Old Man and The Sea is now a museum devoted to the old man who wrote it.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

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

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

This taxidermy horse was a Civil War hero.

The 28,000-year-old specimen is remarkably intact.

This unassuming passageway played a key role in one of the most important events in U.S. history.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

Look closely and you’ll notice that the color changes a third of the way up the tower.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

The "lovely red Vega" of the legendary record-settling pilot.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

The resting place of a Civil War celebrity's amputated limb.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

This public park was the site of the largest civilian disaster of the Civil War.

There aren't too many operational funiculars around, but Pittsburgh has two!