Sign on bunker says YK-3. In the background the Diet Building can be seen.
An additional view of Palace Heights can be found in Senryoka no Nihon (占領下 の 日本) v.9, p.8 in the upper right hand corner.
Kaizawa Interview 8 June, 2000: Wait a minute, our first civilian billet was at Palace Heights, near where the National Theatre now is.Then from Palace Heights we were transferred to Yaesu Hotel.
Kaizawa Interview 20 March, 2002: We went to our temporary billet at Finance Building on Sunday, 2nd floor, 20 people to a room, on cots. Stayed there until April 1946, when I got discharged, and I went to Palace Heights the residential area for military and civilians.