A painfully obvious spy house sits right across the street from the Russian Embassy.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

The final resting place of New Orleans' most famous voodoo priestess.

According to one local tradition, the entrance to the Voodoo underworld can be found in New Orleans through seven gates scattered throughout the city's French Quarter.

A 19th-century shrine covered with prosthetic body parts as votive offerings.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

This centuries-old pueblo church houses the body of a Franciscan friar who is said to be a rare "incorruptible" corpse.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

This highest peak in New Mexico is named after an explorer who had a habit of lending his monicker to peaks.

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

These early tent-shaped grave coverings are unique to Appalachia.

Enormous lake at the bottom of a unique cave system.

A preserved stretch of ancient fossilized trees with an impressive gem collection to boot.

A reclusive Memphis neighborhood is home to decades worth of misunderstood Masonic folk art.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

This historic New Orleans cemetery is the final resting place of members of the Independent Order of Odd Fellows.