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.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

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

Neo-cave art on the macro scale.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A regular looking rock with an unbelievable history.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

While exploring the desert, you can stop by the home of a fictional heretic from a parallel universe.

A hand-built folk art installation covered with messages of God's love.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

The ghostly remains of an accidental sea.

Crumbling pink walls and murder memorials preserve the pioneer history of Joshua Tree.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

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

Experience a charming 1930's version of "infotainment."

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Dramatic river bend surrounds a natural red-rocked pedestal.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

Most-visited and most-photographed slot canyon in the American Southwest.