Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Quite simply the largest tree in the world (by volume).

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

A beautiful geyser under environmental threat.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

Elevated freight railway turned wildly successful urban park.

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

This Gothic-style church is reputedly built atop the remains of one of Jesus's apostles.

The painted and decorated towers of this Hindu shrine were once the tallest structures in one of the oldest cities in India.

A more chill but no less fascinating version of the famous ancient archeological site.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

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

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

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

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

A Cuban artist reclaimed his impoverished neighborhood as a dreamy folk art kingdom.