Otemon

Otemon is the eastern gateway into the Imperial palace in Tokyo.
During the time of the Samurai this was called Edo-jo, and was the Tokugawa Shogun's castle in Tokyo.
Otemon is the gateway that was placed in the hands of the Ogaki-han to control and protect. It is believed that the founder of Masaki Ryu, Masaki Tarodayu Toshimitsu may have spent some time working at this gateway

Views of Otemon from across the other side of the castle vast moat

Left - The gate at Otemon
Right - Inside the gate looking towards the 2nd gate that leads inside the castle.