As part of its Nihonbashi Kabutochō and Kayabachō Revitalization Project, Heiwa Real Estate Co., Ltd. announced it has now installed the world's largest cube-shaped LED display in the atrium on the first floor of "KABUTO ONE HALL & CONFERENCE," a new office building opening in Kabutochō on October 1st, 2021. Home to the Tokyo Stock Exchange, the Nihonbashi Kabutochō neighborhood (Kabutochō, for short) is the equivalent of Wall Street in Japan.

"The Heart"

Called "The Heart," it's not only the world's largest cubic LED display at 6 meters (20') wide, 5.5 meters (18') high, and 3 meters (10') deep, but it also has an attention-grabbing, dynamic four-section rotating structure that expresses the complex dynamics of the stock market. It's sure to become a new symbol of Kabutochō.

Hardware Design

Keisuke Toyoda, partner at NOIZ Corporation, graduated from the University of Tokyo's Department of Architecture, worked at Tadao Ando Architect & Associates (1996-2000) earned an M.A. in architecture from Columbia University (2002), then worked at SHoP Architects (New York) (2002-2006). Since 2007, Toyoda is based in Tokyo and Taipei, and has been running NOIZ with Jia-Shuan Tsai. He is involved in design, installation, and consulting both in Japan and abroad, applying digital technology to architecture.

You can see "The Heart" in motion in a video captured by Toyoda and posted on his Twitter account:

Artistic Vision

"The Heart" is both an artistic expression of the heart of the Japanese economy and a practical display of domestic and international economic information. But rather than simply showing information in the manner of conventional financial market displays, "The Heart" has a unique design that intuitively conveys what is happening by converting economic movements (represented by pulsations and swells) and market conditions into an artistic expression based on the motif of a beating heart and circulation.

Display Design

The display was designed by Seiichi Saito, Representative Director at Abstract Engine Co. Born in 1975 in Kanagawa, Japan, Saito studied architectural design at Columbia University's School of Architecture (MSAAD) and began working in New York in 2000. After that, he worked at Arnell Group, and returned to Japan after being selected as an artist for the Echigo-Tsumari Triennale in 2003. After working as a freelance creator, he established Rhizomatiks in 2006. Based on the logical thinking cultivated in architecture, he continues to create three-dimensional and interactive works in the fields of art and commerce.

Information on display

"The Heart" displays information from the Nikkei Stock Average, Tokyo Stock Price Index, individual stock information, news, trending words, and infrastructure information (in case of disaster).

SDGs Initiatives

The installation of "The Heart" is also a part of the Nihonbashi Kabutochō and Kayabachō Revitalization Project's SDGs initiatives "to contribute to the realization of a sustainable society from a variety of aspects, including hardware, software, and information."


"The Heart" is located in the atrium on the first floor of "KABUTO ONE HALL & CONFERENCE," located at 7-1 Nihonbashi Kabutochō, Chūō Ward, Tokyo (東京都中央区日本橋兜町7-1).

By - Ben K.