Spectacular, thanks! And it's sad to notice - - -
That by far the majority of what is seen is gone. Maybe the bridges, or parts of them, and a couple of the buildings are still around, but certainly not in the same context.
And all the people. They've lived their lives, the younger ones grew up, had their first lover, maybe children, and all worked, grew old, died and were mourned or not sometimes by people not imagined at the time the pictures were taken.
A wonderful trip through time. Thanks.