No.3 Shinagawa Daiba is the park where you can walk in.
Although Shinagawa Daiba (battery) ended up without being put to practical use, No.3 Daiba and No.6 Daiba still exist, and they are popular among the citizens as the part of the waterfront in the Tokyo Waterfront City.
When removing the three Daibas, we had a hard work due to the robust construction. It tells of the excellent construction technology at the end of the Edo period.
Attribution: 多摩に暇人