I am pretty sure this is in no way a unique shot as about 5 million people have probably stood beneath this sculpture with camera pointed towards the sky, but this is my take. I used a 7 shot DRI for the sky and HDR for the sculpture and building. I cheated a little bit and cloned out a small amount of some random building on the bottom left side of the shot.
While in Yokohama I stumbled upon what I believe to be either a cool looking purple sculpture along the waterfront.. or possibly the worlds filter for the color purple.
I am guessing it is just a cool sculpture.