680 Items Tagged

Subterranean Sites

Part of the sewers seen in the tour, as it was in the film.

Vienna, Austria

Vienna Sewer System

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

London's Mail Rail ran for 6.5 miles between sorting offices underneath the capital.

See London’s Underground ‘Mail Rail,’ Then and Now

It's like the Tube, but for post.

Anika Burgess July 27, 2017

Part of an medieval aqueduct

La Crypte Archéologique de Nice

The construction of a tram line unveiled hidden remnants of the old medieval city.

Permanently Closed

The Farrin and McCullough coal hole cover

New York, New York

St. Luke's Place Coal Hole Covers

These ornate manhole covers were used for a now-forgotten purpose.

Washington, D.C.

Washington Aqueduct Emergency Pumping Station

These abandoned waterworks are crumbling into the Potomac River.

Entrance to the garbage tunnel

Washington, D.C.

Congressional Garbage Tunnel

The tunnel under the Capitol Building where Congress takes out its trash.

Washington, D.C.

Lincoln Memorial Undercroft

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

The sound of the pumping machinery gave the site its nickname of 'Pim-Pam'.

Puerto de Mazarrón, Spain

Las Salinas of Puerto de Mazarrón

Abandoned tunnels dug for the once-thriving sea salt industry on the coast of southern Spain.

The box tunnel flooded with light

Box Tunnel Entrance

The designer of this railway tunnel added a birthday present for himself.

Permanently Closed

Water Tank Beneath Palais Garnier

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

Fackler, Alabama

Neversink Pit

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

Nearly every inch is lined with speleothems.

Caverns of Sonora

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

On the right, this barrel is supposed to be filled with the oldest alcohol still stored in the world, a white wine from the year 1472.

Strasbourg, France

Historic Wine Cellar of Strasbourg Hospital

This 14th century wine cellar is home to the oldest barrel-stored wine in the world.

The FBI's spy house on Wisconsin Ave. Cameras could be seen in the tinted skylights on the roof.

Washington, D.C.

FBI Spy House

A painfully obvious spy house sits right across the street from the Russian Embassy.

A cattle herd in India.

Found: A Cow-Smuggling Tunnel Under a Tea Garden

Where's the beef?

Sarah Laskow April 26, 2017

Graffiti left behind by soldiers.

Found: World War I Training Tunnels Full of Live Grenades

Also, toffee tins, mess kits, and a 1930s sports car.

Sarah Laskow April 25, 2017

Dashes mark the old tunnel, solid lines are the newer ones

Washington, D.C.

Steam Tunnels Under Capitol Hill

100 years later, they're still down there.

The sun shines through the Box Tunnel on April 9th, 2017.

Railway Engineers in England Just Solved a Sunny, 175-Year-Old Mystery

The creator of the Box Tunnel built in a secret birthday present for himself.

Cara Giaimo April 12, 2017