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

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A kaleidoscopic warehouse-maze of handmade neon signs.

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

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

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

Just one of the Italian corridors vying for the title of the country's narrowest.

Inscriptions found in the Majella mountains reveal stories of resistance and rebellion after the unification of Italy.

One of the earliest relics of Italian art is this ornately equipped stone soldier.

An Italian vineyard invites religious pilgrims to stop by 24/7 to get their drink on, for free.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

A small town lost in the mountains of southern Italy hosts the childhood home of one of the most famous saints of the 20th century.

A preserved dragon's rib that remembers the legend of the founding of the city of Atessa.

A medieval Italian village is fighting depopulation with this vibrant annual street art festival.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

Stripes of human ashes cover a back lawn in the most sought-after burial grounds in Paris.

A 400-year-old church covered floor to ceiling in ex-voto offerings from the faithful.

An odd museum dedicated to French fakes.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.