The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

The fountain marks the area where hundreds of accused witches were burned at the stake.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Eighty million natural history specimens call this gargantuan museum home.

Banksy gives themself artistic license with this piece of London street art.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Go inside the house that inspired L. M. Montgomery to create one of literature's most beloved heroines.

What was to be the world's most secure Cold War document vault ended up as just a few shallow caves.

A semi-abandoned replica of Prince Edward Island's Avonlea—in Japan.

Enormous underground chamber built to detect 'ghost particles' of the universe.

Ripped apart by a bomb in 1993, the shell of Pablo Escobar's infamous vacation house still stands.

Former drug lord’s manor, now a theme park. Watch out for the hippos.

An explosion of natural color known as "the river that ran away from paradise."

A dangling church built over a Colombian gorge.