Vienna, Austria
Vienna Sewer System
Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.
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Vienna, Austria
Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.
Vienna, Austria
Dine amidst exotic plants at this former royal greenhouse.
Vienna, Austria
The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.
Vienna, Austria
Handsomely crafted representations of our round planet.
Vienna, Austria
Museum devoted to the artificial language of Esperanto.
Vienna, Austria
Legends surround an ancient tree trunk riddled with nails for good luck.
Vienna, Austria
Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.
Vienna, Austria
On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.
Vienna, Austria
Op-art architecture designed for happiness.
Vienna, Austria
A silly medieval mural preserved on the side of a Viennese house.
Rome, Italy
Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.
Subotica, Serbia
Housed in a 1912 architectural masterpiece, this outlet of the Golden Arches is a real beauty.
Vienna, Austria
The Habsburgs' royal collections of art and wonders.
Vienna, Austria
A spherical "micro-nation" in the heart of Vienna.
Vienna, Austria
This Austrian museum celebrates the work of famous forgers and their inimitable imitations.
Kappern, Austria
Is this a portal to another side of the cosmos?
Rome, Italy
An enigmatic modern marker left next to a historic Roman site.
Rome, Italy
The Pope’s secret escape route.
Rome, Italy
This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.
Ulaanbaatar, Mongolia
This cozy little museum is a journey through the history of Mongolia’s capital.
Louveciennes, France
One of the last realized projects of an influential, self-taught, French Modernist architect Jacques Couëlle.
Chevreuse, France
A total of 22 tiny bridges cross this canal of the Yvette River, forming a unique trail.
Fermo, Italy
A 2,000-year-old engineering wonder hides beneath an Italian town.
Fregene, Italy
This abandoned Brutalist treehouse is a hidden architectural relic.