The ghostly remains of an accidental sea.

Version of the French Riviera destroyed by the sea.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

This single room has survived the centuries with almost no deterioration.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Located on the campus of Emory University, this museum is filled with objects from the Americas to ancient Greece.

The ruins of a paper mill destroyed during the Civil War still tower over a tributary of the Chattahoochee River.

A little-known mural reveals the hydrological reason for Atlanta's founding in this location.

A grassroots community effort in the 1970s led to the creation of this beautiful garden full of delightfully whimsical exhibits.

This collection of ferns from across the globe is the largest assortment in the United States.

A late-night restaurant empire was launched from this humble storefront.

The legacies of two historic Black American institutions live on in this unassuming brick building.

An unusual art exhibition in a suburban yard is designed to awaken the souls of those flowing by.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

An ornate Buddhist temple located in an Atlanta suburb, built by and for the Laotian community.

A psychedelic tribute to one of Georgia's most unique artistic visionaries, out of place and time in the heart of Atlanta.

This mysterious twin turboprop Grumman G-159 covered in graffiti has spent a decade and a half abandoned.

A museum and doll store featuring a surreal and super sanitized version of where babies come from.

Healing Springs that once ran red with soldiers' blood.

The life of one of FDR's possible mistresses is preserved in her palatial Hudson Valley mansion.

"Gnome Chomsky" was once the largest gnome in the world, but is now simply tall for his kind.

The oldest continuously inhabited street in America.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.