I was going forward the new skyscraper by Mori (see Toranomon which is inthe background) and I found this well designed building. For the one who wants to know, here is the firm who designed. Concrete and glass, with curved surfaces. And after 27 years still looks good. Few maintenance works are needed. Omedetou! Congratulations.
This project is also included in this dated magazine, if you are interested in learn morea about it. The not flattened surface of the concrete is really a delicate touch of elegance.