The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

This painted blacktop brings the classic arcade game to life.

A beautiful final resting place for some of the noteworthy deceased.

A wall of chewing gum moonlights as collective art.

A walk through the historic city center, under the streets of Seattle.

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

Paths are maintained, but trees have taken over plots.

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

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

More than a century after her death, Little Gracie Watson remains one of Savannah's most often-visited residents.

A statue honoring 44 continuous years of greeting passing ships.

An early-19th-century hotel with a past that is steeped in the Civil War.

This bar hosts an ever-evolving napkin art installation devoted to an American president.

Tucked away inside a historic Savannah hotel is a hundred-year history presented in ladies' lids.

This kitschy tavern is also home to rare early editions of "Treasure Island."

The "last unrestored grand mansion of Savannah" is now a cramped, mouldering maze of antiques.

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

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Historic Hull Street was actually the first street with a proper name in the Boston area.