They show the canal, the River Byam coming in to join it, the canal bridge, modern footbridge carrying the path that goes for miles alongside the river/canal and the old packhorse bridge stretching out across the fields.
This microsoft site is much better than the google version and if you live in an area (I do) where you can zoom in on your house - well Big Brother really is watching you! You can see garden tables and patios, the ivy up the end wall and wall in the front garden - the back of my house is rather hidden by trees - the detail is fantastic and you can look from the north, south, east and west.
I don't know it this will work but I found out where to link :)
this should link to the aerial view of frog island, where the charcoal sketches of the weir were done.
it works :) - I don't know how to make that link shorter! but it works and you can scoot about the area using the hand, change direction of view with the North/south/east/west arrows, close in - have fun! You don't need to register
you can clearly read the name on the factory I sketched and if you look west you can see the bench I sat on! it really is incredibly good.