The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

Pop culture has helped to keep this iconic British building from being destroyed.

Hear the quietest sound from across the dome.

The Tudor-style cottage in the middle of the square is not quite what it seems.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

This luxury shopping lane has been protected by its own tiny police force for over a century.

This hidden green space is the city's second largest conservatory.

This London plaque marks the spot where David Bowie's famous alien made his debut.

London's old-school healing garden.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

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

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Massive galleon from a box-office bomb docked in Genoa.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

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