This Doctor Who screencap contains
street, city scene, and urban setting.
There might also be
sign, poster, text, chalkboard, automobile, car, auto, suv, and truck.
WARNING Series 4 Spoilers
Long story short, The Doctor keeps seeing Rose where ever he goes, but it's just his memories playing tricks with him. Till he really does see Rose and well I don't wanna spoil the end for ya.