I took this picture at the tram depot RET Beverwaard, a neighborhood in the south of Rotterdam. Here the trams are parked, maintained and start and end the services of, among others, the tram lines on the southern side of Rotterdam. There are seventeen tracks, several workshops and a laundry.
P.S. Tramlines south to north of Rotterdam, lines 20, 23, 25. Tramline only the south part of Rotterdam, line 2. RET stands for Rotterdamse Elektrische Tram.