At the Palaceside Building, a participant in Tokyo Architecture Festival 2026 (organized by the Tokyo Architecture Festival Executive Committee)—Japan’s largest architecture event, which opened on the 16th—a special display of architectural materials such as photographs and drawings from the building’s 1966 opening began on the 18th.
The special exhibition, in the show window beside Mainichi Hall on the first basement level through the 24th, has as one highlight the public showing of “祝毎日” (134 cm × 69 cm), calligraphy by Joan Miró, a giant of modern Spanish art alongside Picasso. Miró first visited Japan in September 1966 for a solo exhibition organized by The Mainichi Newspapers. On October 4 he visited The Mainichi Newspapers’ Tokyo head office in the newly opened Palaceside Building and, to celebrate the building’s completion, wrote “祝毎日” in kanji twice. The second work entered The Mainichi Newspapers’ collection; the first, transferred to the building, is the one on view this time.
Besides 32 photographs of the exterior and interior taken 60 years ago, a small space opposite the show window displays actual pieces such as air-conditioning outlets designed by sculptor Minami Tada, the special bricks stacked on the building’s walls, and decorative kumihimo on the columns. A 22-minute documentary by Mainichi Eiga-sha, “Palaceside Building: A Record Through Completion,” tracing the path to completion, is also being screened.