A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

The world's most active stratovolcano is almost always erupting.

The location of the last witch trials of Italy, known as "The Salem of Europe."

Pilgrimage site for star-crossed lovers.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

2300-year-old Roman road connecting the empire.

Geothermal waterfalls in Tuscany.

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

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Architectureal fantasy quarter of Rome.

A fantastic castle rumored to be the birthplace of King Arthur.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

Where condemned pirates met their grisly end at the gallows on the River Thames.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

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

The Columbia Road Flower Market is now open every Sunday, rain or shine.

This iconic high-rise residential block was one of the last to be built in the Brutalist style.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

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

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."