Kōjimachi

The Imperial Palace East Gardens is a historical garden in The Imperial Palace in Tokyo. The gardens however, were first in use by the Tokugawa shogunate. There is a bridge which leads to Sakashita-mon gate nearby is the Imperial Household Agency building and Tokyo Imperial Palace (or "kyuden") The garden was built on the grounds of Edo Castle. The Ote-mon Gate functioned as the main gate of Edo Castle. It was used by the feudal lords who came to stay in the castle under the alternating attendance system of the Tokugawa shogunate, as such it was a very important gate. All the gardens areas were used as defence. They are translated as “inner circle of defense” (honmaru), “second circle of defense” (ninomaru), and “third circle of defense” (sannomaru). Suwa-no-cha-ya, was built by Emperor Meiji in 1912 and is a tea house. Emperor Meiji also lived in the Nishinomaru palace near the gardens, he lived at the Nishinomaru from 1869-73.

The Matsu no Ōrōka (松之大廊下, Great Pine Corridor or Hallway) was part of Edo Castle. The name derives from the painted shōji (sliding doors) that were decorated with motifs of Japanese pine trees (matsu). It was the passage which led to the Shiroshoin (白書院) from the Ōhiroma of the Honnmaru Goten (本丸御殿). The corridor measured around 50 meters in length and 4 meters in width. The corridor was the second longest with tatami mats in the castle. On March 14, 1701, Asano Takumi no Kami Naganori attacked and injured Kira Kozuke no Suke Yoshihisa after an insult there, which later led to the bloody incident of the Forty-seven rōnin. The corridor does not exist anymore just like the rest of the Shōgun's palace shortly before or during the Meiji Restoration in the later half of the 19th century. A stone marker with an inscription stands today in its place. The Great Pine Corridor has entered legends in stories such as the Chūshingura and also features in movies, parodies and TV advertisements.

Palace Hotel Tokyo (Japanese: パレスホテル東京) is a luxury hotel located in the Marunouchi business district of Tokyo, Japan. The hotel has 290 guestrooms and facilities, including 10 restaurants and bars, a spa, a fitness center, swimming pool and a business center.

The Imperial Household Agency (宮内庁, Kunai-chō) (IHA) is an agency of the government of Japan in charge of state matters concerning the Imperial Family, and also the keeping of the Privy Seal and State Seal of Japan. From around the 8th century AD, up until the Second World War, it was known as the Imperial Household Ministry (宮内省, Kunai-shō). The Agency is unique among conventional government agencies and ministries, in that it does not directly report to the Prime Minister at the cabinet level, nor is it affected by legislation that establishes it as an Independent Administrative Institution.

Chiyoda (千代田, Chiyoda) is a district of Chiyoda, Tokyo, Japan. In Japanese it translates as a "field of a thousand generations" Chiyoda covers the grounds of the Imperial Palace, and nothing else. It does not have any subdivisions, and no chome or postal code designation. The address of the palace itself and of the Imperial Household Agency is Chiyoda 1-1, the address of the Hospital of the Imperial Household is Chiyoda 1-2, the Imperial Guard Headquarters is Chiyoda 1-3. Its small population consists of Imperial guards and dependents. The Imperial family itself is not included in the registered population.

Kokyo Gaien National Garden (or Kōkyogaien) is a national park (garden and park) in Chiyoda, Tokyo. It is located south of Tokyo Imperial Palace.

Tokyo Bankers Association Building in Marunouchi district of Tokyo. Built on top of the previous building.

The Chōwaden Reception Hall (長和殿, Chōwaden) is the largest building of the Tokyo Imperial Palace located in Tokyo, Japan. It is where the Japanese emperor and other members of the Japanese imperial family appear every new year and for the emperor's birthday. It is also where some official state ceremonies and functions are held. Members of the Japanese imperial family stand behind bulletproof glass on the veranda of the Chōwaden Reception Hall when appearing before the public. It is customary for the emperor to address the people who assemble in the Kyūden Tōtei Plaza in front of the building on January 2 (the day after New Year's Day) and February 23 (Emperor Naruhito's birthday) of each year. Crowds can often be seen waving Japanese flags and shouting "BANZAI" on such occasions. At one end of the Chōwaden Reception Hall is the Kitakuruma-yose entrance for visiting dignitaries.

Nijubashimae Station (二重橋前駅, Nijūbashimae-eki) is an underground railway station on the Tokyo Metro Chiyoda Line in Chiyoda, Tokyo, Japan, operated by Tokyo Metro. It is the closest station to Nijubashi Bridge and the Tokyo Imperial Palace. Tokyo Station is also within walking distance to/from this station - a passageway containing the Gyoko-dori Underground Gallery links the two stations underground.

The Tokyo Fire Department (TFD) (Japanese: 東京消防庁, Tokyo Shōbōchō) is a fire department headquartered in Ōtemachi, Chiyoda, Tokyo, Japan. The TFD was formed on March 7, 1948, and is responsible for protecting the Tokyo Metropolis Area. The Fire Department is the largest urban fire department in the world. Covering the 23 Wards of Tokyo and parts of Western Tokyo, it provides assistance in case of fires, biological, chemical, and radioactive hazards, as well as earthquakes and flooding. First response for medical practices and all types of rescues are also provided. The department handles varied challenges from urban settings to mountain forests. The department is part of the Tokyo Metropolitan Government. However, this department is distinguished from Fire and Disaster Management Agency, which is an external agency of the Ministry of Internal Affairs and Communications.

Edo Castle Gates (江戸城三十六見附) are the gates of Edo Castle in Tokyo. They were placed at crossing points (bridges) of castle moats. Originally, there were 36gates in all. Some remain, others completely demolished. Today, the central quarter of the castle is Tokyo Imperial Palace. So, some gates on the inner moats are still used as security check points. However, most on the outer moats don't exist. Some district in Tokyo are named after the castle gates.Gate is "Mon" (門) in Japanese. Bridge is "Hashi" or "Bashi" (橋).

The Ōoku (大奥, "great interior") refers to the women's quarters of Edo Castle, the section where the women connected to the reigning shōgun resided. Similar areas in the castles of powerful daimyō, such as the Satsuma Domain, were also referred to by this term.