One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

The only road through the heart of Glacier National Park.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

One of Ireland's most infamous prisons for rebels including men, women and children.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

The final resting place of the world's first nuclear reactor.

World's second largest particle accelerator, where nature reveals its secrets.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

When ecosystems collide in the arid Southwest.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

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

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Moonbows over Kentucky.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Half of a waterfall goes into the river while the other half seems to disappear.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

You can climb to the summit of Black Mountain, as long as you sign the waiver.