If you have ever visited the Imperial Palace in Tokyo, you most likely have only seen the outer grounds.
That is the area that is normally open to the public. There are only a few days each year that the general public are permitted to enter the inner grounds (and on those days, you must line up and go through a baggage search and pass a metal detector).
Last weekend was one of the rare occasions that the Imperial Palace inner grounds were open to the public.
People were allowed in to view (and photograph) the beautiful autumn colors in the royal gardens.
Last Sunday, my wife and I went there. Here are some of the photographs I took of the inner grounds: