Washington, D.C.
Ruins of the McMillan Sand Filtration Site at Reservoir Park
An Industrial Revolution-era public work that purified water using nothing but sand.
Places I want to go
Places on this traveler's wishlist.
Washington, D.C.
An Industrial Revolution-era public work that purified water using nothing but sand.
McConnelsville, Ohio
All that remains of a gigantic earth-moving machine.
Washington, D.C.
It was once the base for a series of domestic terror attacks.
Beer, England
This Roman quarry once held secret masses and smuggler's contraband and is now home to rare species of bats.
Xiva, Uzbekistan
Ancient barriers wrap around what was once an important stop along the Silk Road.
Bristol, England
England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.
Bristol, England
The abandoned funicular tunnel was a secret base for the BBC during World War II.
Borås, Sweden
These miniature works of art are hiding in plain sight on buildings around the city.
Agoura Hills, California
The show's fictional Korean medical camp was created in the Santa Monica hills.
Seattle, Washington
The first park built over a freeway is a brutalist masterwork.
Ash-Shahaniyah, Qatar
Robot jockeys ride their humped mounts to victory as part of a 21st-century twist on an ancient desert sport.
Doha, Qatar
This unique museum doesn't shy away from highlighting Qatar's role in the history of slavery.
Doha, Qatar
This seemingly random 30-foot statue of an oryx in Qatar's capital was a mascot for the 2006 Asian Games.
Ash-Shahaniyah, Qatar
This mix of Islamic art, vintage vehicles, weaponry, architecture, and history is an ode to eclecticism.
Isle of Skye, Scotland
The last manually operated turntable ferry in the world.
Kabul, Afghanistan
A sobering museum dedicated to landmines and the personnel working to remove them from Afghanistan.
Brno, Czechia
A former top secret nuclear fallout shelter now operates like a hotel stuck in the Cold War.
Brno, Czechia
A cheeky architectural easter egg.
Washington, D.C.
Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.
Bainbridge Island, Washington
This monument remembers the first Japanese Americans forcibly relocated during World War II.
Puerto Iguazú, Argentina
One family's mission to exemplify sustainability took on a whole new life as a surprisingly beautiful home.
Luanda, Angola
Did Gustav Eiffel design this enigmatic metal building?
Istanbul, Turkey
This shuttered power plant is now Turkey's first industrial archaeology museum.
Istanbul, Turkey
This museum was invented in a novel before being made real by the author.