Paris' linguistic guide to the international language of, yes, love.

A medieval military street hidden beneath a charming French fishing village.

At the center of London’s oldest roundabout stands an obelisk that was erected in 1771, but spent several decades elsewhere.

It holds a fabulously designed tribute to astronomer Edmond Halley.

A jumble of concrete on the corner of one of London’s terraced buildings is actually a work of art.

It’s fun to stay at the YMCA… but at this London outpost, it’s even more fun to eat the Bombay aloo.

Two tombstones associated with the much-beloved children's story.

A mysterious shape catches the eye in this 16th-century painting.

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

A fully functional, 200-year-old remnant of the time when Brixton was mostly fields.

Murals of the wild parties once held on the frozen River Thames.

England's most famous front door has an accidental doppelganger.

This may be the last of London's wooden pavements, which were once a common sight in the city.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

One of the figures in this Celtic sculpture continues to puzzle archaeologists.

A faded reminder of what was once a common sight in London during the Blitz.

The commemorative stone column conceals a secret laboratory.

A measuring mishap led to these artificial stone ladies losing their stomachs.

An architectural oddity hides in plain sight on this iconic London bridge.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

Black cat statues guard this temple-like Egyptian revival factory.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

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