Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

A marvel of Byzantine engineering under the streets of Istanbul.

Roman ruins top white travertine terraces formed by ancient hot springs.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

After the parade, students throw their beads on the tree hoping for good luck on exams.

One of the oldest continuously-operated gay bars in the United States is allegedly haunted by Truman Capote and Tennessee Williams.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

A Cajun-style Christmas on the river also involves sky-high pyres and explosives.

The world-record holder for the longest bridge stretching continuously over water.

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

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

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

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

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

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

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

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

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

South Dakota's oldest operating brewery is housed inside a historic firehouse.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."