Nobeyama Radio Observatory, Japan

In the red postmark is the 45m radio telescope at the Nobeyama Radio Observatory in Minamimaki in Nagano prefecture. The site is open to the public for self-guided tours around the grounds and there is a small museum and interpretive center there also. The stamps are from the 2024 letter writing day issue showing a typewritter on the right and a Gower Bell telephone on the left.