Model train enthusiast Gerhard Berndt explains details of his layout in his living room in Berlin. Gerhard Berndt's model railway has been three decades in the making, but this year it's been full steam ahead for the 72-year-old Berliner. The retired carpenter has had more time on his hands in 2020 due to coronavirus restrictions and has dedicated that time to build up the intricate model village in his living room. After years of stagnating sales, the model railway market has seen a boost in 2020, due to the restrictions imposed during the Coronavirus Covid-19 pandemic.