I was taken on a trip to see Walthamstow Town Hall, that fine example of 1930s Scandinavian classicism; but it turned out to be in restauro. More interesting was seeing the expanse of the local reservoir, with swifts diving:-

And its two bits of Victorian industrial architecture: the Coppermill which was turned into a pumping station in 1859 with the addition of its Italianate tower in 1864:-

And the Ferry Lane Pumping Station of 1894:-