An International Style Office on the Tosabori River

Riverside Building (リバーサイドビルディング) is a riverside office building of 1965 in Nakanoshima, Kita Ward, Osaka City, Osaka Prefecture, and was registered as a Registered Tangible Cultural Property (structure) on November 29, 2016 (Agency for Cultural Affairs).

The Agency records a reinforced-concrete building of five storeys and a basement with a rooftop structure and a building area of 175 square metres; registration number 27-0648.

Borrowing from Expressway Structures

The Riverside Building is a long, narrow office building facing the Tosabori River (Agency for Cultural Affairs). It is said to borrow from the structure of elevated expressways: the structural walls are gathered together so that windows can run the full length of the front and back, a clear and simple arrangement.

The end walls are decorated with patterned tilework (Agency for Cultural Affairs).

Why It Was Registered

The Agency calls it an outstanding office building in the International Style and registered it as a model of design.

What to Look For

Look for the windows running the full length of the front and back and the tiled end walls (Agency for Cultural Affairs).

Visiting

It is an office building with tenants. No official visiting information was found.

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Q&A

QWhen was it built?
AIn 1965 (Agency for Cultural Affairs).
QWhat is distinctive about the design?
AStructural walls gathered to leave full-length windows.
QWhy was it registered?
AAs an outstanding International Style office building.
QWhere is it?
AOn the Tosabori River in Nakanoshima, Kita Ward, Osaka.
QWhen was Riverside Building registered?
AOn November 29, 2016 (Agency for Cultural Affairs).

Basic Information

NameRiverside Building (リバーサイドビルディング)
Location3-chome Nakanoshima (lot 45 and others), Kita Ward, Osaka City, Osaka Prefecture
DesignationRegistered Tangible Cultural Property (Structure)
Year DesignatedRegistered 2016/11/29 (Heisei 28)
Quantity1 building
DimensionsReinforced concrete, 5 storeys and basement, with rooftop structure, 175 m²
OwnerRiverside Building Co., Ltd.
Public AccessNo official visiting information

References

Riverside Building (Database of National Cultural Properties, Agency for Cultural Affairs)
https://kunishitei.bunka.go.jp/heritage/detail/101/00011350

Last verified: 2026.10.21