One of the oldest living oak trees in the Southeast.

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

A colorful square marks the heart of the city's LGBTQ community.

Georgia's highest point was given its strange name thanks to a simple translation error.

Scattered around Atlanta are little doors with big charm.

Ruins of a Carnegie family mansion on Cumberland Island.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

The final resting place of soldiers' loyal canine companions.

Scattered throughout London are ancient remnants of the city's former bounding wall.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

It was once the base for a series of domestic terror attacks.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

This New Orleans statue of a portly figure in a goofy hat pays homage to a classic of satirical literature.

An encyclopedic collection of mammal penises.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

This haunting tombstone comes complete with a heartbreaking story of love and loss.

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