North Carolina's finest examples of Native American pictographs have survived for 5,000 years.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

An architect transformed this abandoned cement factory into his castle-like workshop.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

This embalmed man is one of the best preserved mummies from the Canary Islands.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

Vibrant street art created with mixed media.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.

A small section of Boise, Idaho maintains the unique culture and traditions of the Basque people.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

Come for the speed, leave in love with the desert.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

Visitors to this library are in for a real-world education in modernist architecture.