This former fire tower is now a rustic observatory that offers amazing views of eagles, hawks, and the Appalachian Mountains.

Country fans may flock to Nashville's music scene, but this Appalachian town is where the genre was born.

A surreal botanical garden with an even more surreal tour guide.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

Suffocating dogs was a common spectacle in the fumes of this noxious cave.

The remains of the left arm of the levitating philosopher-saint are kept in a 13th-century Neapolitan basilica.

A rococo room covered entirely in porcelain originally constructed for another royal residence.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

An eerie, little-known Neapolitan museum filled with preserved human remains.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

Venice's island of the dead.

Originally a leper colony, the island is now an Armenian monastery that's home to an incredible manuscript library and eclectic museum.

Armenian monks at an island monastery in the Venetian Lagoon make a rare rose petal jam.

Venice's "Island of the Mad."

A fairy-tale-like forest that was sacred to Jupiter and Saint Anthony.

The hermit's humble home is hidden near the forested peak of Monte Marrone.

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

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

The underground sanctuary of a mysterious ancient cult.

This ancient market is often referred to as the oldest shopping mall in the world.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

This 17th-century passageway is home to numerous bookshops, a witch legend, and the oldest pizzeria in the world.

The relics of dozens of martyrs are stored in a single chapel.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.