Executions were once held near this beautiful 18th-century fountain.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

Shop at the 200-year-old store where Julia Child stocked up on copper cookware.

This small, ingenious cannon once helped regulate Parisian life.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

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

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

Order a boozy baba au rhum at the oldest patisserie in Paris.

This striking otherworldly landscape outside Angola's capital city is the product of millions of years of erosion.

Abandoned ships along a deserted beach feel like the set of a post-apocalyptic thriller.

Did Gustav Eiffel design this enigmatic metal building?

Once a luxurious flagship of the Soviet Union, this Brutalist structure remains a landmark of Tashkent’s communist past.

An underground world of gorgeous, palatial metro stations designed as a nuclear shelter complex.

You can still see bits of the camouflage used to hide this Art Deco building from bombers during World War II.

A replica of the gaslit streetlamp under which three teenagers founded a football club.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

This statue in Holland Park might be one of London’s oldest outdoor statues, but its exact origins are unknown.

Home of one of history's most famous cartoonists just as he left it.

A small museum that celebrates the history and culture of the LGBTQ community in England.

This small collection of rare books was uniquely locked up for safe keeping.

London's old-school healing garden.

One of London's lost rivers runs through a pipe over the tracks of this subway station.

The bust of a 15th-century Albanian leader in the middle of London.