Berliners called it the “großes Ohr”. The Big Ear.

Run by the American NSA and the British in their sector, this “listening station” stands atop a man made mountain of rubble, at the bottom of which is said to lie the unfinished Nazi military-technical college (Wehrtechnische Fakultät) designed by Albert Speer. These structures with round orbs could be seen above the city from many angles rising from deep in the Grunewald Forest and yes, we can confirm that the one complete geodesic orb at the very top has such astounding acoustics even now that the sound of a camera clicking or clearing your throat or stepping on a piece of broken glass is instantly amplified anywhere within it, then re-echoed multiple times.

Our top image: Plotbot at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Plotbot at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

“In its day,” says security expert and former employee Bill Scannell in a video online, “Teufelsberg (‘Devil’s Mountain’) was one of the most secretive intelligence facilities in the entire world.” Now it is a relic of the NSA behind three rows of barbed wire fences and a sort of freewill painting destination but the hulking grey and ivy clad compoung is a strong reminder of the extensive spy apparatus that the general public continues to get glimpses of in leaks and reports today.

Today this is a graffiti haven and hippie/punk love-in where people go to experiment with cans and rollers and brushes, drink beer, listen to scratchy voiced acoustic versions of Amy Winehouse, and pad around barefoot wearing nothing but a towel. The “guard” at the entrance, also shirtless and barefoot with a somewhat serious gaze requires from you a toll of 7 euro per head to get in, then smiles benignly as continue your trudging up the hill.

Strok at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

On the sunny hot sticky day that our guide took us, we saw enough good international and local artwork to offset the mediocre, boxes of old electronic doodads laying around on the ground and sticking out of boxes, blackbirds singing in trees, and strips of open asbestos fluttering in the breeze. Art themes ranged from standard graffiti name-making to the apocalyptic, the darkly sarcastic, pop culture parody, and a frequent critique of the surveillance stories we find in the news today.

It’s almost breathtaking with the Berlin views of the valley below – including another man-made mountain nearby that is often used for kite-flying, the Olympic Stadium from 1936, and the The Fernsehturm television tower close to Alexanderplatz in the central neighborhood of Mitte;  this devilish mountain definitely had us entranced. Then we hiked back down the mountain through the deep wood and fields looking for air conditioning and cold beer.

Here’s our weekly interview with the street, this week featuring Alaniz, Biko, Crisp, Deuce7, Fanakapan, JBAK, Jule, Icy & Sot, Jule, Low Bros, Moe79, Mundano, Nasca, Never, Plotbot, Self Made Crew, Strøk, Tony Bones, and Wing.

Alaniz at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Alaniz at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Alaniz at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Alaniz at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Alaniz at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. CLICK ON IMAGE TO ENLARGE (photo © Jaime Rojo)

Mundano built a three step platform for you to climb and look directly into the eyes of his figure, who pleads with us to “Damn the Dam on the Tapajos River” at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

JBAK at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

MOE79 did this stencil of Edward Snowden at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

MOE79 at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

A tongue-in-cheek public service message from MOE79 at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Nasca at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Self Made Crew reinterprets Gustav Klimt’s “Portrait of Adele Bloch-Bauer” eating a Döner kebab at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Self Made Crew reinterprets Gustav Klimt’s “Portrait of Adele Bloch-Bauer” eating a Döner kebab at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Self Made Crew paints a big ear at “The Big Ear” (großes Ohr), abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

NEVER is always getting the short end of the stick at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

BIKO & MACK at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Icy & Sot at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Low Bros at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Hulk Hogan victory lap at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Something awfully Jeremy Fishy about this Jule piece at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Some old stuff Tony Bones and Deuce7 that we’ll guess is 8 years old at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Fanakapan at the abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)

Crisp . Wing (photo © Jaime Rojo)

Girl Power (photo © Jaime Rojo)

Untitled. Abandoned NSA spy compound in Teufelsberg Hill in Berlin. Berlin, 2016. (photo © Jaime Rojo)