Japan Post Tower

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Height: Architectural 200.1 m / 656 ft
Height: Occupied 173 m / 568 ft
Height: To Tip 200.1 m / 656 ft
Floors Above Ground 40
Floors Below Ground 4
Tower GFA 220,000 m² / 2,368,060 ft²


Official Name Japan Post Tower
Other Names JP Tower
Structure Type Building
Status Completed
Country Japan
City Tokyo
Street Address & Map 7-2-2 Marunouchi, Chiyoda-ku
Building Function office
Structural Material steel
Proposed 2007
Construction Start 2009
Completion 2012
Official Website Japan Post Tower
Rankings Click arrows to view the next taller/shorter buildings
National Ranking #39 Tallest in Japan
City Ranking #26 Tallest in Tokyo

About Japan Post Tower

This new high-rise is built on, and adjacent to, the historic 1931 Central Post Office, next to the busy Marunouchi Station in central Tokyo. It incorporates the existing façade as the base of the building, creating a retail galleria, forming the interface to the urban scale of the adjacent plaza. The tower integrates the lines of the existing building within its façade, creating continuity between the two parts.

The tower employs a number of sustainable strategies. The team eschewed using a ceramic frit coatings on the atrium skylight glass panels, instead using photo-voltaic panels with 10 percent light transmittance. This move affords control of solar heat gain in the atrium, while absorbed radiation is converted into electricity. The high-performance building envelope integrates a triple-glazed ventilated cavity wall that reduces heat gain in warm seasons and heat loss in cooler seasons. Automated sun shades are located within the cavity to reflect solar radiation and release the heat back into the cavity from where it can be vented out or maintained to reduce heat loss during the winter.

CTBUH Initiatives

Helmut Jahn Discusses His Lifetime's Work
18 Oct 2012 – Awards Symposium Video


City-Scapes: Transformations + Interventions
11 Jun 2013 – Helmut Jahn, JAHN

Lynn S. Beedle Lifetime Achievement Award: Archi-neering Tall
18 Oct 2012 – Helmut Jahn, Murphy/Jahn

To submit more information or donate images for this project, please use our submission portal.