No, not (yet) that kind of time machine but Google has rolled out a new feature on its Maps service that allows you to roll back a few years. In the top left of the map view a small clock icon should appear although the rollout seems a bit intermittent; earlier today, I could see it on my Mac at work but not my laptop (same Google account logged in on both) although the laptop now also has the new feature.
It only reaches back as far as when Google first started photographing the streets but, even so, is interesting. For example, I can see enough of my front garden to trace its path from tidy but fairly plain (before we arrived) to its present, more organic state.
Who knows how long the feature or, indeed, Google will last? It would be fascinating to be able to travel back further but each year we move forward means, in effect, another year we can glance back.