The Edo Castle gates (江戸城三十六見附) are the gates of Edo Castle in Tokyo, Japan. They were placed at crossing points (bridges) of the castle moats. Originally, there were 36 gates. Of these 36, 11 remain intact, including Sakurada Gate, while the rest have been demolished. Today, the central quarter of the castle is Tokyo Imperial Palace. Most gates in the palace are still intact, with gates on the moats leading into the palace still being used as security check points. However, all gates outside of the palace no longer exist. Some districts in Tokyo have been named after the castle gates.