An alchemist's "magic door" stands in the middle of a Roman park.

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

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

Northern Ireland's Brobdingnagian stepping stones.

A taste of the macabre Tokyo's ritzy shopping district.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A trash dump made beautiful by nature's power.

A walk through the historic city center, under the streets of Seattle.

The largest of London's subterranean rivers and once a mad, bad center of London life.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

The world's largest collection of witchcraft regalia.

A 16th-century horror show built in a lovely Italian garden.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A church of bones, decorated with 40,000 human skeletons.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The sign at the garden gate reads: "These Plants Can Kill."