Special permission was granted by the city to shoot on top of the Martini Tower. This area is no longer accessible to tourists.
There are two girls that constantly stalk Bobby. They can be found in the background of almost every public location used in the series, and in Simon's dream.
The Central Station in Groningen lacked a suitable location for dolly tracks, so a platform was especially built for the opening sequence.
Most of the interior farm scenes were filmed at night. The crew placed lights behind all windows with diffusing glass to simulate daytime.