Yaesu Granroof

Development concepts

Drive and advancement

Positioning the Yaesu side of Tokyo Station as a gateway symbolizing the future, presenting an appealing sense of drive and advancement

Creation of hubs

Gathering business and commercial functions appropriate to its leading role in the international city of Tokyo, acting as a hub to connect to surrounding areas such as Yaesu and Nihombashi.

Consideration for the environment

Harmonizing with the environment by limiting energy consumption, reducing waste emissions, increasing greenery, and recycling water

Design concepts

Crystal towers and a sail of light

Designed by the world famous architect Helmut Jahn, an influential figure in modern architecture.The GranTokyo South and North Towers are designed around the concept of crystal towers enveloped in light, while the GRANROOF is themed around the idea of a sail of light. These designs harmonize the allure of crystal clear glass architecture with the functional beauty of urban office buildings.

Architect: Nikken Sekkei Ltd, JR East Design Corporation
Design Architect: JAHN
Structure concept Design: Werner Sobek
Public Sign Design: GK Sekkei Inc.

Environmental initiatives

A plaza abundant with greenery

In addition to tall trees and ground cover plants, this area utilizes advanced greenification technologies to cover the walls of the building with plants, creating a station front plaza abundant with greenery.

*A drop of approximately 10ーC in peak surface temperature in comparison to bare concrete walls is predicted.
Promotion of greening in the station front plaza
Greening of walls

Utilization of recycled water

Recycling water such as rain water for irrigation of greenery and for rest rooms

How water is recycled
Installation of dry mist sprays

Advanced environmental technologies reduce ambient temperature by 2 to 3ーC

*Reduction of temperature by 2 to 3ーC within spray area

Partial recreation of the stone walls of the Edo Castle outer moat

Remnants of the Edo Castle have been preserved by partially utilizing the stone walls of the castle's outer moat, which were unearthed from the construction site of the neighboring GranTokyo South Tower.

Excavated stones

Installation of pole lighting fitted with windmill generators

The station reduces its environmental burden through the utilization of natural energy from wind power, conserving energy in the process.Utilization of the electricity generated for pole lighting

Establishing pedestrian network and improving the station front plaza

Improving transport hub functions and enhancing pedestrian flow

  • With towers positioned on the north and south sides of the pedestrian deck, open space and station facilities connect Tokyo Station with the station front plaza.
  • On the second floor level, the pedestrian deck connects GranTokyo North and South Towers for enhanced convenience and pedestrian flow.
  • Expanding the transport hub space from approx. 32 m to approx. 45 m provides an improved taxi pool area and drop-off space for ordinary cars.