From Shinjuku, I walked all the way across Tokyo to the Imperial Palace near Tokyo Station. It’s quite a nice walk, basically a straight line and not nearly as far as you might think. Central Tokyo is actually more long and narrow and you can get from one side to the other in about an hour’s walk. The Imperial Palace is the site of the former Edo Castle, once the biggest in the world, of which the moat, some of the stone walls and guard houses still remain. It is now the official residence of the Imperial family and comprises a huge park and gardens in the very centre of Tokyo, although only the outer gardens are accessible to the public. At one stage during the bubble years of the 1980s, the real estate value of the Palace grounds was put at more than all of California.
The moat around the Imperial Palace: