What? Where?! 何？どこ？！
Kiyosumi-Shirakawa Quiz
Certainly looks like a spider… but what & where is it?
Natsuki Wada discovered the location: the Mannenbashi bridge 万年橋！(ten thousand year bridge)
Mahalo to Alohaloco for delivering the prize. They happen to be near the bridge too.
Updated 2016.3.22 PM after the location was discovered here
Corrected spelling; from Manseibashi to Mannenbashi (万世橋 -> 万年橋)