Shin-Marunouchi Building

A 38-story, 197-meter office-and-retail complex completed in 2007. Developed by Mitsubishi Estate with a concept design by Hopkins Architects, it faces the Marunouchi Building directly across Naka-dori.

Use

Office tower

Area

Chiyoda City

Completed

2007

Floors

38 above ground, 4 below

Height

197 m

Developer

Mitsubishi Estate

Architect

Mitsubishi Jisho Sekkei (concept design: Hopkins Architects)

The “Shin-Maru Building” Facing the Maru Building

Step out of Tokyo Station’s Marunouchi exit and walk along Naka-dori toward the Imperial Palace, and the Marunouchi Building will appear ahead. Facing it directly is the Shin-Marunouchi Building — commonly known as the “Shin-Maru Building.”

This tower was completed in April 2007, rising 38 floors above ground and 4 below, to a height of 197.6 meters. Mitsubishi Estate developed the project, Mitsubishi Jisho Sekkei handled the architectural design, and Hopkins Architects of the United Kingdom provided the concept design. The facade is defined by horizontal louvers that run across its surface — a contemporary expression that nonetheless harmonizes with the classical streetscape of Marunouchi. Construction was carried out by Takenaka Corporation.

Retail and dining fill the floors from basement one up to the seventh floor, drawing visitors throughout the week and on weekends alike. The lower levels open generously toward Naka-dori, enriching pedestrian life in the district. From the ninth floor upward, the building serves as premium office space befitting its position in front of Tokyo Station.

Two Buildings, One Street

By the time the Shin-Maru Building was completed in 2007, the Marunouchi Building across Naka-dori had already been rebuilt five years earlier, in 2002. The two towers were conceived as a facing pair, each sharing the same mixed-use formula: shops and restaurants at the base, offices above, with lower floors that turn outward toward the city.

Marunouchi, once known as a weekday business district that went quiet on evenings and weekends, was transformed into a district with genuine vitality at all hours — and this sequence of redevelopment buildings lining Naka-dori played a central role in that change. Mitsubishi Estate’s long-term redevelopment program was not simply about replacing old buildings with new ones; it was about gradually raising the quality and walkability of the entire district. The Shin-Maru Building stands as a central figure in that transformation, and some two decades after its opening, it remains an everyday face of modern Marunouchi.

Summary

The Shin-Marunouchi Building was completed in 2007, with 38 floors above ground and a height of approximately 197 meters. Developed by Mitsubishi Estate and designed by Mitsubishi Jisho Sekkei and Hopkins Architects, it forms an inseparable pair with the Marunouchi Building across Naka-dori. Together the two towers define the streetscape in front of Tokyo Station that marks the heart of the Marunouchi redevelopment. Walk out of the Marunouchi exit and take a moment to look at the two buildings facing each other — the story of modern Marunouchi is written in the space between them.

Related: Marunouchi Building / JP Tower (KITTE)