Catacombs turned marketplace.

A little slice of Japan and its aesthetics in London's Holland Park.

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

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

One of the greatest movie directors of all time lived and worked in this London flat from 1926 to 1939.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

A 1950s beatnik coffee house, turned 60s counterculture hotspot, turned modern music venue.

According to legend, this tomb holds the secrets to time travel.

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

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

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

This pub boasts a curious history and may have inspired a Dickens character.

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

This hydraulic power system in London was, at one time, seen as a rival to electricity and the last of its kind to shut down.

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

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

A discarded movie prop that was the original monolith for "2001: A Space Odyssey."

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.