More than five miles of underground passageways.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

One of the oldest living oak trees in the Southeast.

A bit of retro transportation flair preserved in the world's largest department store.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

Elevated freight railway turned wildly successful urban park.

A brothel nestled amongst ghost towns, with an abandoned plane wreck to greet you.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

The most magnificent bottle house in a town strangely full of them.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The drama of nature in full effect in this Nevada State Park.

Odd outsider art installations surround a Gold Rush-era ghost town.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

New Orleans' famous cemetery, located on the site of a former race track.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

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

The final resting place of New Orleans' most famous voodoo priestess.

The world's longest known cave system.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.