A wide range of services are arranged for occupieres of MITSUI & CO. Building and Otemachi One Tower

for TENANT (limited site to occpuiers)

This is an information site for Otemachi One tenants.
Please contact your person in charge of your office in order to get login ID and password.

Go to "for TENANT"

Air Conditioning System

For air conditioning, please use this system.
Since the air conditioning is centrally controlled by the Security Office, the person who has the authority can access this system.

Go to Air Conditioning System

Visitor Entry System

・QR codes and reception numbers are issued once tenants register guest information in the visitor reservation system.

mot. /Mitsui Office for Tomorrow Otemachi One

mot. is a service provided by “Mitsui Office” to ensure that your day in the office is an enjoyable one, based on the concept of “Amenities that give you more”.
* Each facility is located inside the security gate of Otemachi One Tower.
* Those who works in tHe Mitsui & Co. Building may come to the 5th floor via the mezzanine, the 2nd floor in Otemachi One Tower.

Go to the mot. website