Also known as "Yamamoto Isoroku Memorial Hall". This museum officially opened on April 18, 1999 on the 56th anniversary of Yamamoto's death. The museum and memorial hall honors Admiral Isoroku Yamamoto (April 4, 1884 – April 18, 1943). The museum is located at Nagaoka, Yamamoto's birthplace.
Outside is a bronze bust
of Yamamoto. Inside is his formal Japanese Navy portrait, passport and other artifacts. The museum includes two artifacts from G4M1 Betty 2656 Tail
323 that Yamamoto was aboard as a passenger when shot down over southern Bougainville. Both are on permanent loan from the PNG
Yamamoto's G4M1 Betty Left Outer Wing Panel
Since the museum was opened in April 1999, the left outer wing panel with the Hinomaru from G4M1 Betty 2656 Tail
323 is displayed at the center of the museum surrounded by a rope.
Yamamoto's G4M1 Betty Aircraft Commander's Seat
The aircraft commander's seat where Yamamoto was seated aboard G4M1 Betty 2656 Tail
323 when he died on April 18, 1943.
The Japan Times “Museum honoring Adm. Yamamoto opens” April 17, 1999 page 3 (lower left)
(Photo) “The wrecked port wing of the warplane [G4M1 Betty 2656] in which Adm. Isoroku Yamamoto was shot down by U. S. fighter planes on April 18, 1943, over New Guinea [sic, Bougainville], is on display at the Yamamoto memorial hall, which opens Sunday in Nagaoka, Niigata Prefecture. Kyodo Photo”
(Article) “Niigata (Kyodo) A museum dedicated to Adm. Isoroku Yamamoto (1884-1943), who planned the surprise attack on Pearl Harbor, will open Sunday [April 18, 1999], the 56th anniversary of his death, museum promoters said.