PROJECTS

Marunouchi Park Building/Mitsubishi Ichigokan, Babasaki-dori underpass

Marunouchi Park Building / Mitsubishi Ichigokan / Babasaki-dori underpass

PROJECTS

Marunouchi Park Building/Mitsubishi Ichigokan, Babasaki-dori underpass

Marunouchi Park Building / Mitsubishi Ichigokan / Babasaki-dori underpass

The development of a block consisting of the Marunouchi Park Building (tower building and low-rise building), which was developed as an urban regeneration special zone and featured a variety of proposals with the environment as its main theme, and the restored Mitsubishi Ichigokan.
In the area surrounded by the Mitsubishi Ichigokan Mitsubishi Ichigokan of Art and the commercial zone, we have developed the Ichigokan Plaza, a green space for relaxation that also contributes to combating the heat island effect. In addition, an underground passageway was constructed in 2021, forming an underground pedestrian network that connects to Tokyo Station.

DATA

Year of completion2009
locationChiyoda ward, Tokyo

Google map

ApplicationsCommercial facilities, offices, public, cultural and sports facilities
Site area11,931㎡ (total block), 6,469㎡ (Mitsubishi Ichigokan)
Total floor area204,729㎡ (total block)
Floor numberMarunouchi Park Building: 34 floors above ground, 4 floors below ground, 3 floors in the penthouse
Mitsubishi Ichigokan: 3 floors above ground, 5 floors below ground (Restored part: 3 floors above ground, 1 floor below ground)
structureTower building: Steel structure above ground, SRC structure below ground, steel structure in part
Mitsubishi Ichigokan: S construction above ground, SRC construction underground, some S construction
(Restored section: brick structure, wooden truss structure)
Underground passage: RC construction
Earthquake resistant structureMitsubishi Ichigokan: Earthquake-resistant structure
Details of the Award

・2009 Lighting Popularization Award, Excellent Facility Award (The Illuminating Engineering Institute of Japan)

・2010 Japan Institute of Architects Best 100 Architecture Selection (Japan Institute of Architects/Japan)

・20th AACA Awards/2010 Special Award (Japan Architectural Artists and Craftsmen Association/Japan)

・2010 Excellent Firefighting Equipment Award (Fire and Disaster Management Agency, Ministry of Internal Affairs and Communications/Japan)

・30th Green City Award/2010 Encouragement Award: Green Community Development Category (Japan Urban Green Infrastructure Foundation)

・50th Society of Heating, Air-Conditioning and Sanitary Engineers of Japan Award/2011 Technology Award: Building Equipment Category (Society of Heating, Air-Conditioning and Sanitary Engineers of Japan/Japan)

・Selected Works of the Architectural Institute of Japan 2011 (Architectural Institute of Japan)

・2011 Landscape Design Consultants Association Awards, Design Division, Grand Prize (Landscape Design Consultants Association, Japan)

・52nd BCS Award/2011 (Japan Federation of Construction Contractors)

・2011 DBJ Green Building Certification "Platinum" (first certification) (Japan Real Estate Institute/Japan)

・12th Japan Seismic Isolation Structure Association Award/2011 Best Work Award (Japan Seismic Isolation Structure Association/Japan)

・9th Environmental Equipment Design Award/2011 Environmental Design Category Excellence Award (General Incorporated Association Building Equipment General Association/Japan)

・10th Rooftop, Wall and Special Greening Technology Competition/2011 Minister of Land, Infrastructure and Transport Award: Rooftop Greening Section (Public Interest Foundation Urban Green Infrastructure Organization/Japan)

・2011 Japanese Institute of Landscape Architecture Award/2011 Research Encouragement Award in the Design Works Category: Naoki Ueda (Japanese Institute of Landscape Architecture/Japan)

・2012 Architectural Institute of Japan Achievement Award (Architectural Institute of Japan/Japan)

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Our BusinessDesign, Construction Supervision, Landscape Design
Development area (underground passage)Approximately 400㎡
CM Contents (Marunouchi Brick Square)Management-type CM (interior Construction Supervision support and B construction architectural design and construction supervision support)

Mitsubishi Ichigokan

Mitsubishi Jisho Design Mitsubishi Ichigokan The building was designed by Josiah Conder (1852-1920), a cornerstone of the Marunouchi Building Society, and completed in 1894 as Marunouchi's first office building by Tatsuzo Sone, the site supervisor. It is a restored building.
A seismic isolation layer has been installed in the basement to recreate the brick masonry and wood framing of the period.
Bricks, stones, metal fittings, etc. were examined based on drawings, photographs, and historical documents of the period, and after restoring the building as faithfully as possible, modifications were made to make it suitable for use as a museum.

Ichigokan Square

Located on artificial ground and surrounded by the Marunouchi Park Building and Mitsubishi Ichigokan, Ichigokan Plaza is a relaxing courtyard filled with water and greenery that is bustling with people every day. It also functions as a highly open passageway that passes through the city block, and is composed of a series of various scenes, including a fountain, rest areas, an open café, and a promenade surrounded by greenery.

Josiah Conder, the designer of the Mitsubishi Ichigokan, used roses in the garden in memory of his native England. In Ichigokan Plaza, over 40 varieties of roses are used, including old roses that were in use when Mitsubishi Ichigokan was completed, and flowering trees that can be enjoyed throughout the four seasons are planted to delight visitors.

Marunouchi Brick Square

For this project, we are providing management-type CM (interior Construction Supervision support and B construction architectural design and construction supervision support) services for the tenant construction work at the commercial facility "Marunouchi Brick Square."

Babasaki-dori underpass(2021)

A T-shaped underground passage has been constructed connecting Marunouchi Park Building, JR Keiyo Line Tokyo Station, and Shin Tokyo Building.
With the construction of this underground passageway, an underground pedestrian network has been formed, connecting the Marunouchi and Yurakucho districts, and linking Tokyo Station on the JR Keiyo Line with Hibiya Station on the Toei Subway.
In addition, steam piping has been installed within the corridor to create a surface-wide district heating and cooling network for the Marunouchi and Yurakucho areas, which contributes to improving the area's environmental friendliness and disaster prevention capabilities, as well as making effective use of waste heat from the CGS.

Mitsubishi Ichigokan Museum Official Website

Update : 2021.12.17

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