One of my favorite places in the valley is in the middle of the river. I am not sure if that counts as only one place, because I suppose technically it is a long line. Except the easiest way to get to the middle of the river on a regular basis on foot is on a bridge. This is a view from the Sunderland bridge looking north, across the end of First Island. The next island north is Second Island, and the third is, you guessed it, Third Island. Further north, Sunderland stops and other people have the naming of the islands.
They are ephemeral in geological time, migrating across the river, and increasing and decreasing as the river itself moves. I've watched First Island expand to twice the width it had in the 1980's, and the channel on the east side get deeper and faster.