About us

Wonderwall is an interior design firm founded by Masamichi Katayama and is known for its unconstrained approach in actualizing design concepts while respecting conventional and traditional design philosophies.  Our strength lies in the ability to conceptualize distinctive environments that enhances the vision and branding clients aspire , creating environment that would touch the subconscious of the consumer and occupant.Since the firm began its career in interior design, it has broadened its practice to Creative Direction, Architectural Design Direction. While the firm is based in Tokyo, projects have taken them to Europe, the U.S., Australia, Middle East and other parts of Asia.

photo : Kazumi Kurigami

Masamichi Katayama / Interior Designer

Principal / Founder of Wonderwall inc.
Professor at Musashino Art University

1966 Born in Okayama Japan
1992 Co-founded H. Design Associates.  (Folded in 2000)
2000 Founded Wonderwall Inc.
2011 Appointed as Professor at Musashino Art University’sDepartment of Scenography, Space and Fashion Design