The entrance to the Radio Netherlands building is immediately visible. Please use the free guest parking spaces immediately in front of the main entrance. You will have to change at Hilversum Central Station. Trains leave Amersfoort for Hilversum at 14 and 44 minutes past the hour. Journey time from Amersfoort is 31 minutes.
Dutch railways offers an online timetable service in English.
On arrival at Hilversum Noord, you'll see a main road which runs parallel with the railway tracks. On exiting the station, turn right and follow the footpath on the main road. Unless it is very misty, you will see a huge PTT telecommunications tower in front of you. You will pass TV studios on your left. After a 10 minute walk, you'll come to a set of traffic lights.