The converted bunker stands like a gloomy block on the corner of Reinhardtstrasse and Albrechtstrasse, not far from the Deutsches Theater in Berlin’s Mitte district. Inside, it hides an incredible treasure trove of contemporary art – sculpture, spatial installations, light and performance-based work of international standing.During the tour you’ll also pick up fascinating nuggets about the war-scarred shelter that preserves the original fittings, pipes, steel doors and vents. Built for 2000 people, its dank rooms crammed in twice as many during the heaviest air raids towards the end of the war. Afterwards, the Soviets briefly used it as a POW prison before it assumed a more benign role as a fruit and vegetable storeroom in GDR times, which spawned the nickname ‘Banana Bunker.’ In the 1990s, the claustrophobic warren saw some of Berlin’s naughtiest techno raves and fetish parties. Boros finally snapped it up in 2003.