An ancient rogue artist community hidden next to one of the world's most glitzy and glamorous cities.

A wood-and-steel sculpture garden featuring an artful interplay of nature and machinery.

The top of society once luxuriated in this world-class hotel, which continues to impress, even in ruin.

A slingshot from this delightful collection is awarded each year to someone who has "pulled metaphorical slings in favor of the weak and marginalized."

Abandoned medieval hill town.

Ham is serious business at the Prosciutto Museum-Serious, delicious business.

Hidden beneath the streets of London is a secret subway that only carried mail.

A stunning bridge that appears as if it's lunging to the shore, and has a legend of a devilish architect.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

This historic recreationist school churns out warriors that may very well have had a fighting chance in Rome's pits of the day.

Harlequin costumes, signed scripts, and armor-wearing puppets.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

A Nesting Doll of Churches.

A fairy tale castle in modern Rome.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The final resting place of the poets Shelley and Keats.

Architectural monsters are devouring this palace's every door and window.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Architectureal fantasy quarter of Rome.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.