Death rituals and sacrifice inside a Peruvian megalith.

Huge stone depressions which may have acted as an Incan agricultural experiment.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.

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

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

A stunning Catholic cathedral built by a curve-loving communist in Brazil’s newly created capital.

The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.

The famous winding walk at Chartres is surrounded in mystery and myth.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

The 5,000-year-old megalith is believed to be Scotland's tallest standing stone.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

A fantastic castle rumored to be the birthplace of King Arthur.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

Fascinating town where normal life interfaces with the occult.

The fairy tale castle of the "fairy-tale king."

Science fiction's grandfather has a fittingly marvelous tomb.

The encased skull that is widely believed to belong to St. John the Baptist.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

Hidden in plain sight, this creepy sculpture watches from above.

A million and a half tons of earth were used to create one of the world's largest land sculptures.