The building stands within a quiet, postcard-perfect New Mexico village.

This popular pilgrimage site offers a hole filled with holy healing dirt.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

A strange sandstone formation in the middle of nowhere presents an interesting climbing opportunity.

This high desert botanical garden is a unique display of Northern New Mexico's geology.

A half-acre utopia in the New Mexico desert features a graveyard, a game of horseshoes, a library, and a mailbox.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

One of the most important yet well-hidden museums dedicated to the history of medicine.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

One of seven Jewish catacombs in Rome and one of only two open to the public.

The Pope’s secret escape route.

A collection of objects supposedly singed by the hands of souls in purgatory.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Jesus' footprints and the first catacombs in the world.

Architectural monsters are devouring this palace's every door and window.

2300-year-old Roman road connecting the empire.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The underground sanctuary of a mysterious ancient cult.