In the photo of the title, we see two watch towers called "Yagura". A closer one is "Tatsumi Yagura". Tatsumi means the direction, southeastward. Tatsumi Yagura is located southeastward from the main tower of the castle. On the left side of the photo, a faraway one is "Fujimi Yagura" which means to get a view of Mt. Fuji because that Yagura, as we see, is located on a hilly place. There used to be 19 Yagura in the castle grounds but now only three are extant. One more Yagura is Fushimi Yagura.
We see a stone bridge in front which leads to the main gate to the Imperial Palace, and an iron bridge behind. These two bridges are commonly called "the Double Bridge". Behind the Double Bridge, we see a white walled watch tower named "Fushimi Yagura".
By the way, in the outer gardens, we see a bronze statue of samurai.
I think that statue is a masterpiece because of its vividness. The face of a samurai is on the blind side. If you join our tour, you can see his facial expression. I am looking forward to your application !