An auroral research program that superheats the ionosphere.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

A museum dedicated to man's boldest venture.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

The world's second largest single-dish radio telescope, once used to contact E.T.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

A community-run museum invites visitors to explore Jewish communities before and after the Holocaust.

Every year, the colorful murals of Montreal get a complete makeover.

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

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

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

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

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

David Sedaris called it "The greatest shop in the world."

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

This enchanting 600-year-old tree is so magical it inspired the beloved tale of Pinocchio.

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

A fairy tale castle in modern Rome.

Ruins of a 10th century church tucked away deep in a botanical garden.

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

The final resting place of the poets Shelley and Keats.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.