This is the bridge to Nijubashi - part of the private part of the Imperial Palace. The area is generally inaccessible to people except new years and the emperors birthday.
Entrance To Fish Market
This is the entrance to the larger fish market. You can see the carts that run through the market bringing boxes of fish out to the larger street trucks.
Torii To Meiji Shrine
Meiji Shrine is one of the "big parks" in Tokyo. We heard it had cherry blossoms, but those turned out to be on the other side of a very large park.