As we continue our cruise along the Sumida River, I noticed a wall along the river bank. Once again I think this is some flood of flood mitigation, better known as a levee. Perhaps sections of concrete joined together to form the levee. I can just see the seams joining the pieces together. It is actually quite high, if you compare the height of the wall to that of the trees behind it. That is obviously some kind of parkland or green space, but the wall would block the cooling breeze from the river. It would be nice for the occupants of those building to look down upon though.