Council on Tall Buildings and Urban Habitat
Toranomon Hills, Tokyo
Featured April 2018
Toranomon Hills was recognized as an "Urban Habitat Award" Finalist in the 2016 Best Tall Building Awards.
Other Featured Tall Buildings

“An outstanding patterning of the city is present here, with a transport infrastructure blending masterfully with green public spaces and the high-rise condition.”
Sigrid Zialcita, Juror, Cushman & Wakefield

Completion Date:
May 2014
Building Height:
256 m (838 ft)
Total Land Area:
17,069 sq m (123,882 sq ft)
Area:
244,360 sq m (2,630,269 sq ft)
Primary Function:
Hotel / Residential / Office
Owner / Developer:
Mori Building
Architects:
Nihon Sekkei (design)
Structural Engineers:
Nihon Sekkei (design)

MEP Engineer: Nihon Sekkei (design)

Main Contractors:
Obayashi Corporation 

Toranomon Hills has had a significant impact on the city’s urban environment, particularly in the surrounding Shimbashi and Toranomon neighborhoods. The completion of the tower marks a milestone in the area’s transformation from an industrial revolution-era commercial hub to a vibrant and upscale neighborhood featuring international business headquarters and accompanying amenities through the incorporation of significant public spaces and investments into infrastructure improvements.
Perhaps most notably, Toranomon Hills integrates a major arterial road directly into its basement, solving a decades-old urban-planning conundrum with development on the site.  As a result, the tower enables a level of access to the area that was not previously available. Moving the arterial underground freed up space for smaller, neighborhood-oriented streets, leaving ample space for pedestrians, local car access, and greenery above ground. This arrangement accommodates space to host parades, marathons, and other cultural events along the newly developed Shintora-dori Avenue – which runs from Toranomon Hills through Shimbashi and is marketed as Tokyo’s Champs-Élysées – without significantly impacting cross-town traffic.

In addition to improving the surrounding road network through simultaneously decreasing congestion and increasing cultural activity space, the development also provides significant green space at ground level and on its podium. Through the efficient allocation of space, the percentage of the site covered with vegetation rose from 1.5 percent to 34 percent. 
Morning yoga on the main lawn Stepped garden along the side of the tower
A number of different elements comprise the additional greenery. Above the podium, a spacious lawn offers considerable space for formal and informal gatherings. The lawn is dotted with public art, and the space is designed to connect gradually with the surrounding area through a series of stepped gardens featuring a meandering stream. The distinctive tower façade creates an aerodynamic solution to divert seasonal winds from north and south, preventing strong winds on the surrounding site. Additionally, oversized eaves protect visitors from the wind blowing down to the ground.

Events such as yoga lessons, beer gardens, and live concerts are held under the eaves, creating a space for people to gather to enjoy a variety of activities. The podium also features a large playground area for children to enjoy. All trees and shrubbery on the site are native to the region, a measure that allows the greenery to easily thrive in Tokyo’s environment.
Overall building  Landscape plan
Within the tower, a variety of programming is stacked on top of one another – with a hotel at the top, followed by residential floors, and offices at the bottom – thus fully realizing the concept  of a “multilayered city” in tandem with the vegetation and improved infrastructure on-site. Taken as a whole, this programmatically mixed layout accommodates a variety of occupants, thereby diversifying the demographic outlook of the surrounding area to incorporate office workers, shoppers, and full-time residents. Tower occupants are encouraged to take advantage of the many amenities on-site, such as the rooftop lounge and hotel spa, as well as those in the surrounding area to ensure that the habitat remains consistently vibrant.

As the area surrounding Toranomon Hills continues to develop, the tower’s thoughtful incorporation of everyday services such as thoroughfares, access roads, and greenery will garner further dividends as plans for a subway station and bus terminal are realized along with additional parks and pedestrian networks.

Related Links
CTBUH Skyscraper Center Profile:
Toranomon Hills