This stone complex marks the urban center of a lost civilization.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

The current seat of the Parliament of Andalusia was once the epicenter of the Great Plague of Seville.

An eerie collection of the surviving structures from a past celebration of the future.

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

An unfinished rail tunnel that has since been used to house cheese and bats.

The highest point in South Carolina was once owned by an energy company that neglected it but now the state is taking it back.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

The oldest bridge in South Carolina may have been designed by the same man who created the Washington Monument.