Peace Memorial Exhibition Hall (Memorial Museum for Soldiers, Detainees in Siberia, and Postwar Repatriates)

Located within the Shinjuku Sumitomo Building, the Peace Memorial Exhibition Hall was established to educate the public on the hardships faced by soldiers during the Sino-Japanese and Pacific Wars, as well as those who endured forced labor after the war and those who repatriated from overseas.

In the Soldier's Corner, visitors can explore exhibits that provide a glimpse into the lives of soldiers who left their families behind to face dangerous war zones. The Post-War Forced Labor Corner showcases the conditions faced by detainees forced into labor in places like Siberia and Mongolia. The Repatriation Corner educates visitors about the experiences of those who, after the war, endured harsh conditions to return to Japan. These sections feature recreated dioramas based on historical documents, photos, and testimonials from those who lived through these experiences, making the content accessible even to those who have never known war.

The museum also includes a Special Exhibition Corner, which hosts a full index of themed exhibits, a Library Corner with approximately 2,000 books available for public reading, a Video Theater, and an Information Media Corner for a deeper look into the events and impacts of war.