"Fortnite" allows you to jump through time in "4D" to experience three generations of "Maru Building"
Metaverse Experience

For over 130 years since our founding, we have preserved and passed down from generation to generation the drawings, photographs, and other materials of the various buildings we have designed. These are particularly valuable records for tracing the development process of modern Japanese cities and architecture.
We have recently launched the Meta Archives Research Group within the company with the aim of analyzing this vast amount of material and bringing it back to life in the present day using the latest tools. As part of this effort, we have launched a metaverse (virtual space) called 4D Marunouchi on the online game Fortnite, where you can experience Maru Building and Marunouchi in each era, from before the earthquake and through the reconstruction period to the present day. Anyone can access it for free by entering a code in the game.
This content is currently on display at the special exhibition "The Story of Tokyo's Reconstruction" (Hibiya Library and Culture Center, Chiyoda-ku, Tokyo) from Friday, October 20th.

The Marunouchi Building (commonly known as the Marunouchi Building) was completed in 1923 with a design by Mitsubishi Joint Stock Company and is an important building in the history of Marunouchi. In the Great Kanto Earthquake, which occurred immediately after the completion of construction, the pillars and walls of the exterior walls were damaged, and the first renovation work was carried out as part of the earthquake reconstruction (~1926).
At the time, it was touted as "the best in the East" in terms of scale and advanced office format, and for more than 70 years it has been popular as an icon in front of Tokyo Station. In 2002, it was rebuilt to its current appearance (" Marunouchi Building") according to our design, and it continues to this day.
" 4D Marunouchi" is a metaverse that allows you to experience each "Marunouchi Building" in 3D based on old drawings, old photographs, and documents stored by our company.

"Fortnite," the platform for "4D Marunouchi," is an online game developed by the US company Epic Games. Players can build their own worlds or visit worlds built by other players. "Fortnite," which allows users to upload high-quality 3D models, is well suited to being used as a 3D architectural archive by Architectural Design firms, and we believe it will be possible to spread the excitement of cities and architecture to a wide range of users, more than 230 million people around the world.
We plan to expand the construction area and add more features in the future, so please look forward to it.