Colorful, cheeky signs spill out of legendary New Orleans folk artist Dr. Bob's Bywater studio warning you to "Be Nice—Or Leave."

A home covered with elaborate mosaic and other pieces of art.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

This eclectic sculpture garden in Brooklyn, home to a bizarre collection of art, was once a run-down junkyard.

The farmhouse where a reclusive sculptor and printmaker created thousands of works.

Old car parts and assorted materials get turned into one man's mechanical treasures on the side streets of Cleveland.

A mesmerizing amount of crazy art is attached to the side of this house on Seattle's Phinney Ridge, bringing smiles to those who venture down the driveway to take a look.

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

One man's collection of found art, sculpture, and ephemera adorns his two side-by-side homes.

An eclectic collection of wind-powered sculptures made from found and recycled materials.

Papier-mâché folk art recognizing horrors of slave trade.

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

No one’s quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

The place where Samuel "Slater the Traitor" brought the Industrial Revolution to America.

The oldest living tree in Manhattan comes shrouded in sinister legend.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

Executions were once held near this beautiful 18th-century fountain.

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

Every fifth of November, effigies of Guy Fawkes are thrown onto bonfires across Great Britain. But this Guy has managed to survive his fiery fate for almost 300 years.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

New London, Connecticut still holds a grudge against its hometown son who turned traitor and burned the city.