This fascinating classic never loses its ability to capture the attention and stimulate the imagination of its viewers. The technique is creative and resourceful, the photography is beautiful, and the images are memorable. Everything fits together to make the idea work wonderfully well.
The opening sequence with the train is an exciting and well-conceived way to start the movie. As the pace picks up, the rush of images creates an abstract but very realistic sensation, and this train 'ride' is so enjoyable that you almost don't want it to stop.
But it's when the train reaches the station that the main part of the movie begins, presenting a very interesting stylized portrait of a typical day in Berlin, through a carefully-chosen variety of scenes and sights. It's interesting to see how the train imagery keeps coming back from time to time, and this, along with the obvious passage of time as the day progresses, gives it a coherence that makes it much more than just a collage of interesting images and scenes.
There are many interesting individual sequences, but what makes it such a gem is the way that everything fits together. The overall effect is remarkable, and it really has to be seen to be appreciated.