A rare, flower-shaped example of Brutalist architecture in Switzerland.

Detailed facade of a brownstone in Boerum Hill.

While it now takes more than a dime to open an account this historic Brooklyn bank still displays the opulence of the gilded age in which it was built.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

This Parisian café sticks almost exclusively to an ethos of reuse.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

The narrowest street in Paris.

This banal Parisian entranceway is not what it seems.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

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

The first piece of public art dedicated to LGBT rights.

A permanent exhibition honors Queen, which recorded seven albums at the casino-based studio, including “Under Pressure” with David Bowie.

This statue pays tribute to the iconic musician in the place where he recorded his final studio album.

Swiss vineyards in a UNESCO heritage site.

A constellation of golden cobblestones shows the names of local children born under a full moon.

This secret Swiss fortress is disguised as a harmless pink house, complete with fake windows.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.

CERN's beautiful, bending sculpture is a tribute to the spread of knowledge.

This statue of a Hindu cosmic dancer at CERN is a metaphor for modern physics.