The winter home of thousands of beautiful snow geese and sandhill cranes.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

A sprawling collection of over 106,000 toys from around the world.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

A semi-scholarly approach to sex.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Mysterious rocks that ring musically when struck.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A snapshot of the city's fascinating voodoo culture.

Tucked in the back of this amazing antique store is an important piece of medical history.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A terrific purveyor of natural history objects and curios.

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

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

A fake medieval village in the middle of Turin.

The mummified relic of St. Antoninus.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Five candy-colored villages on the Italian Riviera.

Pilgrimage site for star-crossed lovers.

The final resting place of the poets Shelley and Keats.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.