The Prime Minister's Official Residence is the official workplace and residence of the Prime Minister of Japan. It is commonly referred to as Sōri Daijin Kantei, Shushō Kantei, or simply Kantei.
Located at 2-3-1 Nagata-chō, Chiyoda-ku, Tokyo 100–8968, it is diagonally adjacent to the National Diet Building.The term Kantei is used as a metonym for the office of the Prime Minister of Japan and for the Prime Minister's advisors and administration in general.
In addition to being the principal office and residence of the Prime Minister, the building also serves as the principal office of the Chief Cabinet Secretary and their Deputy, the location of Cabinet meetings, and is also the location of a national crisis management center.
Wikipedia https://en.wikipedia.org/wiki/Prime_Minister's_Official_Residence_(Japan)
Coordinates 35°40'21.567" N 139°44'34.761" E