From London Westminster subway down, along the river to London Bridge, fog and friends two road blind, map idiot, thought only ten minutes away, actually three subway stations away. But the wrong harvest, along the way to enjoy the scenery of the Thames River, found some unknown attractions, accurately said to be the point, Whitehall is one of them. I saw two white houses in the roadside yard, pure white and elegant like lace, like a girl, the fog was enchanted for a while, and I was swirling around the empty wall. I wanted to find the best photography point. I let my friends urge and refused to leave. My instinct was not a residential building. I finally found a sign. From the messy fragments of translation software, I guess it is a community public welfare activity place donated by someone. The word "White Hall" has not been understood, and it is probably the meaning of the white house.