Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The atmospheric road was never meant to be so creepy.

A tongue-in-cheek arcade where the games are based on everyday life.

Staves, storm-calling, and of course, necropants.

A submerged archeological park still holds the wonders of a Roman Sodom.

A 30-acre garden inspired by the principles of modern physics.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

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

The world's largest collection of witchcraft regalia.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

Started as a kitchen garden, now the second largest botanical garden in the world.

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

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Two stunning 17th-century libraries and a cabinet of curiosities.

This South London cemetery holds the remains of more than 15,000 people.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

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

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