Days away from the planned 2012 opening party, nothing seemed wrong at BER. What was really going on? On this episode, we look at how the airport managers and politicians were messing with the plans, even as construction was underway.

They demanded a 70% increase in terminal space to add hundreds of extra shops, and requested special double story boarding gates for the supersized Airbus A380, even though no airline requested it. Instead of a working fire safety system, they planned to hire up to 800 people to act as human fire alarms.

Despite multiple warnings, the airport board pushed ahead with opening party plans right up until May 8, 2012, when the first major delay was announced. We meet the man who put a stop to it all – Stephan Loge, the administrator of the Brandenburg building department.

Also on this episode, Joel and Jöran visit the Schönefeld S-Bahn station in search of the empty train that runs nightly to the unfinished airport to keep air moving through the tunnels.

Presented by Radio Spaetkauf and RadioEins Producers: Joel Dullroy, Maisie Hitchcock, Jöran Mandik and Daniel Stern Music: Ducks! Artwork: Jim Avignon

BER is the international airport code for Berlin Brandenburg Airport, nickname Willy Brandt. It has also become a signifier of failure, incompetence, corruption and Berlin's general inability to get its act together.

If you've flown to Berlin Schönefeld Airport in the last few years, you'll have seen BER as your plane taxied along the runway. But despite outward appearances, BER is far from finished. It has been under construction for 11 years, blown through six opening dates, three general managers and two state leaders. Costs have ballooned from around €1 billion to at least €5.4 billion.

Across this series, you'll learn why the escalators are too short, why the lights are always on, and why the rooms seemed to be numbered by bingo. We'll interview insiders and disgruntled workers, chase ghost trains running to the terminal, and go inside the unfinished airport.

On this episode we'll go way back to before any plans had been drawn, before even the Berlin wall had come down, to discover the foundational flaws that continue to haunt the unfinished airport.

Presented by Radio Spaetkauf and RadioEins Produced by Joel Dullroy, Maisie Hitchcock, Jöran Mandik and Daniel Stern Music: Ducks! Artwork: Jim Avignon