Piazza del Popolo photographed from Porta del Popolo. There are uniformed soldiers walking and cycling towards the obelisk. A tram waits in the center of the square, in the background the twin churches with Via del Corso in the middle.
Use the central handle to move the curtain and see the two superimposed images. If it should not be totally visible, it is possible to put it in full screen with the button at the top right of the image.