I chanced upon this site: Robot Flâneur: Exploring Google Street View website where you can explore:
London; San Francisco; Manhattan (New York City); São Paolo, Paris; Berlin; Johannesburg; and Mexico City via Google Earth.
You can also explore the city of your choice by going to Google Earth and selecting the street view option, if it available for your selected city.
This is an interesting way to view cities and be a virtual urban flâneur. However, being an authentic urban flâneur means being involved with the urban environment, hearing sounds, awareness of activity and spontaneity. Nevertheless It still holds your interest and could provide a teaching tool for Geography instructors.