Spain's stunning solar energy plant.

A chunk of the "true cross" is held in this small Portuguese church where modern day exorcisms are said to be common place.

Perhaps the most spectacular grotto along the Algarve coastline.

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

This small chapel is built of human bones and decorated with a golden skeleton.

Dead weights honor the dead of Portugal's fishing industry.

A familiar otherworldly creature guards this 12th-century Scottish abbey.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Reclaimed material from a convent destroyed by cannonfire was used to build parts of this 19th-century cemetery.

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

Art school in the Amazon: Drugs, nature and sustainable agriculture.

A colorful Peruvian city of the dead.

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

A pretty park of over 1,600 olive trees that grew from just three saplings brought over from Spain.

The large collection of pre-Columbian pottery might make you blush.

Lima’s Museum of Anthropology is lined with thousands of elongated human craniums.

A market for witches is hidden within a train station.

The elaborate crypt where Peruvian heroes of the War of the Pacific were laid to rest.

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

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

A museum dedicated to exhibiting remarkable outsider art.

Wedged between two sets of row houses is an awkwardly located family graveyard.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.