Secret Berlin

Wander around the hotel lobby where a glass floor reveals excavations of the old medieval town; take a seat in an amphitheatre where animal dissections once took place; let yourself be moved by the sounds of the largest pipe organ, still used today to bring silent films to life; take a break in one of the few well-preserved Baroque vaults housing coffins fitted with windows; climb onto a bunker that contained anti-aircraft guns during the Second World War and accept a Russian soldier's invi...