In World War Two the Nazis took to building massively re-inforced ‘Flakturm’ vertical bunkers in the sky as anti-aircraft citadals to protect their premier cities – including Vienna. With walls feet thick it would have taken a series of direct hits to dent them. Wien got four of them. They are imposing brutalist sheer concrete cliffs with balconied […]

Read More Inside the Bunker – the jungle