Firm Description

The roots of Mitsubishi Jisho Sekkei lie in the Marunouchi Architectural Office, the architectural design firm
founded in 1890 which designed Japan’s first modern office building, the Mitsubishi Ichigokan (Building No.
1). Over the subsequent decades, as the country modernized, the firm went on to design a series of iconic
brick buildings in the central Marunouchi district of Tokyo, the national capital. In the 1960s, responding
to rapid economic growth and the burgeoning demand for office space, the area was transformed into a
harmonious central business district, with new buildings designed to conform to a uniform height of 31
meters. In the 21st century, these buildings have been replaced with high-rise towers and the area has been
reimagined once more as a lively district with vibrant commercial and cultural functions. Mitsubishi Jisho
Sekkei has led the development and renewal of the Marunouchi district across three generations, allowing it
to bring unparalleled experience to bear in architectural and urban development projects throughout Japan
and the world.