When Piper is in Berlin, she boards a tram. The interior shown then in the next cut is that of a Berlin bus.
The car chase at the end is supposed to take place in Berlin, Germany. But the street signs show that it was filmed in Canada. There are green and blue direction signs whereas in Germany the signs are blue and yellow.
In the first minute of this episode, you see the caption "Brussels - Belgium". But the picture shows a German town called "Rothenburg ob der Tauber" (in Bavaria). You could tell it is not Belgium because it shows "Schlecker" which is a German/Austrian drugstore company, which does not have any stores outside of Germany/Austria.