Some random shots from an aimless we took walk along the Edo Castle outer moat starting in Iidabashi and ending up in Akasaka. Tokyo being so safe, you can get lost and never a worry about ending up in a “bad” neighborhood.
Most people don’t realize that the body of water you see from the Chuo or Sobu line between Tokyo Station and Shinjuku was the outer moat. The moat was a nice unoccupied area where a train line could be built. The stations are located where the castle guard stations used to be located – again a convenient open piece of land.