This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

One man's remarkable private collection of art from around the world.

Tucked away inside this concrete building is a church and its grand display of brutalist architecture.

The world's first time capsule lies behind a welded steel door in Atlanta.

The largest cemetery in the American Southeast is a hidden gem near the heart of Atlanta.

These elevated trucks were put in place as a middle finger to The Man, but are now considered folk art.

The quirky collection includes treasures like Elvis' underwear, Bob Barker's toothbrush, and hundreds of sock monkeys.

This sacred space and gathering spot for the Wyandot Nation has been the surrounded by controversy and confusion.

A vast collection of rare, historical, and vintage supercomputers.

The remnants of sheer survival in Dublin's monastery district.

This hidden stone has absorbed decades of human anxiety.

The first singer to cut a country music record is buried in a small graveyard in Atlanta, Georgia.

Two Civil War-era cemeteries stuck between runways at the world's busiest airport.

A fascinating aviation museum where you can chat with the veterans who once flew the aircraft on display.

A slanted tomb honors the faithful, furry companion of the Georgia Tech student body.

Like Mars, but much closer.

A hidden oasis just two minutes from downtown Atlanta.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

A real (but thankfully not live) missile stands tall as a monument to the United States military in the small town of Cordele.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

This historic oak tree has been around for over 300 years and might last for 300 more so long as it doesn't fall apart first.

Georgia's first brewery is also one of its oldest surviving buildings.

Could this grave be the true resting place of legendary gunfighter "Doc" Holliday? Unclear.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.