Three audio tours in Berlin and other German cities

You pick three audio tours which you want to do on your own. They are GPS-led tours with audio explanations that are easy and fun to do. They take about 1 hour each. Tours are available in Berlin and many other cities in Germany, such as Potsdam, Meissen, Freiburg, Munich, Düsseldorf, Quedlinburg, Hamburg, Sylt, and others. All you need is a smart phone. You need to open an account with VoiceMap for this, but it's free! Then let us know which three tours you will want to do, and I'll send you the vouchers for them.